18970140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{47}}^1$

素因数の和:128

約数の個数: 144

約数和(自身を含む): 64060416

約数和(自身を除く): 45090276

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 47, 60, 62, 70, 84, 93, 94, 105, 124, 140, 141, 155, 186, 188, 210, 217, 235, 282, 310, 329, 372, 420, 434, 465, 470, 564, 620, 651, 658, 705, 868, 930, 940, 961, 987, 1085, 1302, 1316, 1410, 1457, 1645, 1860, 1922, 1974, 2170, 2604, 2820, 2883, 2914, 3255, 3290, 3844, 3948, 4340, 4371, 4805, 4935, 5766, 5828, 6510, 6580, 6727, 7285, 8742, 9610, 9870, 10199, 11532, 13020, 13454, 14415, 14570, 17484, 19220, 19740, 20181, 20398, 21855, 26908, 28830, 29140, 30597, 33635, 40362, 40796, 43710, 45167, 50995, 57660, 61194, 67270, 80724, 87420, 90334, 100905, 101990, 122388, 134540, 135501, 152985, 180668, 201810, 203980, 225835, 271002, 305970, 316169, 403620, 451670, 542004, 611940, 632338, 677505, 903340, 948507, 1264676, 1355010, 1580845, 1897014, 2710020, 3161690, 3794028, 4742535, 6323380, 9485070, 18970140]

約数ペア:

[(1, 18970140), (2, 9485070), (3, 6323380), (4, 4742535), (5, 3794028), (6, 3161690), (7, 2710020), (10, 1897014), (12, 1580845), (14, 1355010), (15, 1264676), (20, 948507), (21, 903340), (28, 677505), (30, 632338), (31, 611940), (35, 542004), (42, 451670), (47, 403620), (60, 316169), (62, 305970), (70, 271002), (84, 225835), (93, 203980), (94, 201810), (105, 180668), (124, 152985), (140, 135501), (141, 134540), (155, 122388), (186, 101990), (188, 100905), (210, 90334), (217, 87420), (235, 80724), (282, 67270), (310, 61194), (329, 57660), (372, 50995), (420, 45167), (434, 43710), (465, 40796), (470, 40362), (564, 33635), (620, 30597), (651, 29140), (658, 28830), (705, 26908), (868, 21855), (930, 20398), (940, 20181), (961, 19740), (987, 19220), (1085, 17484), (1302, 14570), (1316, 14415), (1410, 13454), (1457, 13020), (1645, 11532), (1860, 10199), (1922, 9870), (1974, 9610), (2170, 8742), (2604, 7285), (2820, 6727), (2883, 6580), (2914, 6510), (3255, 5828), (3290, 5766), (3844, 4935), (3948, 4805), (4340, 4371)]