21000663516

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1\times {\mathrm{1993}}^1$

素因数の和:2228

約数の個数: 192

約数和(自身を含む): 60973903872

約数和(自身を除く): 39973240356

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 17, 21, 28, 34, 42, 47, 51, 68, 84, 94, 102, 119, 141, 157, 188, 204, 238, 282, 314, 329, 357, 471, 476, 564, 628, 658, 714, 799, 942, 987, 1099, 1316, 1428, 1598, 1884, 1974, 1993, 2198, 2397, 2669, 3196, 3297, 3948, 3986, 4396, 4794, 5338, 5593, 5979, 6594, 7379, 7972, 8007, 9588, 10676, 11186, 11958, 13188, 13951, 14758, 16014, 16779, 18683, 22137, 22372, 23916, 27902, 29516, 32028, 33558, 33881, 37366, 41853, 44274, 51653, 55804, 56049, 67116, 67762, 74732, 83706, 88548, 93671, 101643, 103306, 112098, 125443, 135524, 154959, 167412, 187342, 203286, 206612, 224196, 237167, 250886, 281013, 309918, 312901, 374684, 376329, 406572, 474334, 501772, 562026, 619836, 625802, 655697, 711501, 752658, 878101, 938703, 948668, 1124052, 1251604, 1311394, 1423002, 1505316, 1592407, 1756202, 1877406, 1967091, 2190307, 2622788, 2634303, 2846004, 3184814, 3512404, 3754812, 3934182, 4380614, 4777221, 5268606, 5319317, 6369628, 6570921, 7868364, 8761228, 9554442, 10537212, 10638634, 11146849, 13141842, 14706347, 15957951, 19108884, 21277268, 22293698, 26283684, 29412694, 31915902, 33440547, 37235219, 44119041, 44587396, 58825388, 63831804, 66881094, 74470438, 88238082, 102944429, 111705657, 133762188, 148940876, 176476164, 205888858, 223411314, 250007899, 308833287, 411777716, 446822628, 500015798, 617666574, 750023697, 1000031596, 1235333148, 1500047394, 1750055293, 3000094788, 3500110586, 5250165879, 7000221172, 10500331758, 21000663516]

約数ペア:

[(1, 21000663516), (2, 10500331758), (3, 7000221172), (4, 5250165879), (6, 3500110586), (7, 3000094788), (12, 1750055293), (14, 1500047394), (17, 1235333148), (21, 1000031596), (28, 750023697), (34, 617666574), (42, 500015798), (47, 446822628), (51, 411777716), (68, 308833287), (84, 250007899), (94, 223411314), (102, 205888858), (119, 176476164), (141, 148940876), (157, 133762188), (188, 111705657), (204, 102944429), (238, 88238082), (282, 74470438), (314, 66881094), (329, 63831804), (357, 58825388), (471, 44587396), (476, 44119041), (564, 37235219), (628, 33440547), (658, 31915902), (714, 29412694), (799, 26283684), (942, 22293698), (987, 21277268), (1099, 19108884), (1316, 15957951), (1428, 14706347), (1598, 13141842), (1884, 11146849), (1974, 10638634), (1993, 10537212), (2198, 9554442), (2397, 8761228), (2669, 7868364), (3196, 6570921), (3297, 6369628), (3948, 5319317), (3986, 5268606), (4396, 4777221), (4794, 4380614), (5338, 3934182), (5593, 3754812), (5979, 3512404), (6594, 3184814), (7379, 2846004), (7972, 2634303), (8007, 2622788), (9588, 2190307), (10676, 1967091), (11186, 1877406), (11958, 1756202), (13188, 1592407), (13951, 1505316), (14758, 1423002), (16014, 1311394), (16779, 1251604), (18683, 1124052), (22137, 948668), (22372, 938703), (23916, 878101), (27902, 752658), (29516, 711501), (32028, 655697), (33558, 625802), (33881, 619836), (37366, 562026), (41853, 501772), (44274, 474334), (51653, 406572), (55804, 376329), (56049, 374684), (67116, 312901), (67762, 309918), (74732, 281013), (83706, 250886), (88548, 237167), (93671, 224196), (101643, 206612), (103306, 203286), (112098, 187342), (125443, 167412), (135524, 154959)]