21076860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:200

約数の個数: 144

約数和(自身を含む): 70326144

約数和(自身を除く): 49249284

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 67, 70, 84, 98, 105, 107, 134, 140, 147, 196, 201, 210, 214, 245, 268, 294, 321, 335, 402, 420, 428, 469, 490, 535, 588, 642, 670, 735, 749, 804, 938, 980, 1005, 1070, 1284, 1340, 1407, 1470, 1498, 1605, 1876, 2010, 2140, 2247, 2345, 2814, 2940, 2996, 3210, 3283, 3745, 4020, 4494, 4690, 5243, 5628, 6420, 6566, 7035, 7169, 7490, 8988, 9380, 9849, 10486, 11235, 13132, 14070, 14338, 14980, 15729, 16415, 19698, 20972, 21507, 22470, 26215, 28140, 28676, 31458, 32830, 35845, 39396, 43014, 44940, 49245, 50183, 52430, 62916, 65660, 71690, 78645, 86028, 98490, 100366, 104860, 107535, 143380, 150549, 157290, 196980, 200732, 215070, 250915, 301098, 314580, 351281, 430140, 501830, 602196, 702562, 752745, 1003660, 1053843, 1405124, 1505490, 1756405, 2107686, 3010980, 3512810, 4215372, 5269215, 7025620, 10538430, 21076860]

約数ペア:

[(1, 21076860), (2, 10538430), (3, 7025620), (4, 5269215), (5, 4215372), (6, 3512810), (7, 3010980), (10, 2107686), (12, 1756405), (14, 1505490), (15, 1405124), (20, 1053843), (21, 1003660), (28, 752745), (30, 702562), (35, 602196), (42, 501830), (49, 430140), (60, 351281), (67, 314580), (70, 301098), (84, 250915), (98, 215070), (105, 200732), (107, 196980), (134, 157290), (140, 150549), (147, 143380), (196, 107535), (201, 104860), (210, 100366), (214, 98490), (245, 86028), (268, 78645), (294, 71690), (321, 65660), (335, 62916), (402, 52430), (420, 50183), (428, 49245), (469, 44940), (490, 43014), (535, 39396), (588, 35845), (642, 32830), (670, 31458), (735, 28676), (749, 28140), (804, 26215), (938, 22470), (980, 21507), (1005, 20972), (1070, 19698), (1284, 16415), (1340, 15729), (1407, 14980), (1470, 14338), (1498, 14070), (1605, 13132), (1876, 11235), (2010, 10486), (2140, 9849), (2247, 9380), (2345, 8988), (2814, 7490), (2940, 7169), (2996, 7035), (3210, 6566), (3283, 6420), (3745, 5628), (4020, 5243), (4494, 4690)]