20990130

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:264

約数の個数: 96

約数和(自身を含む): 59590080

約数和(自身を除く): 38599950

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 49, 70, 98, 105, 109, 131, 147, 210, 218, 245, 262, 294, 327, 393, 490, 545, 654, 655, 735, 763, 786, 917, 1090, 1310, 1470, 1526, 1635, 1834, 1965, 2289, 2751, 3270, 3815, 3930, 4578, 4585, 5341, 5502, 6419, 7630, 9170, 10682, 11445, 12838, 13755, 14279, 16023, 19257, 22890, 26705, 27510, 28558, 32046, 32095, 38514, 42837, 53410, 64190, 71395, 80115, 85674, 96285, 99953, 142790, 160230, 192570, 199906, 214185, 299859, 428370, 499765, 599718, 699671, 999530, 1399342, 1499295, 2099013, 2998590, 3498355, 4198026, 6996710, 10495065, 20990130]

約数ペア:

[(1, 20990130), (2, 10495065), (3, 6996710), (5, 4198026), (6, 3498355), (7, 2998590), (10, 2099013), (14, 1499295), (15, 1399342), (21, 999530), (30, 699671), (35, 599718), (42, 499765), (49, 428370), (70, 299859), (98, 214185), (105, 199906), (109, 192570), (131, 160230), (147, 142790), (210, 99953), (218, 96285), (245, 85674), (262, 80115), (294, 71395), (327, 64190), (393, 53410), (490, 42837), (545, 38514), (654, 32095), (655, 32046), (735, 28558), (763, 27510), (786, 26705), (917, 22890), (1090, 19257), (1310, 16023), (1470, 14279), (1526, 13755), (1635, 12838), (1834, 11445), (1965, 10682), (2289, 9170), (2751, 7630), (3270, 6419), (3815, 5502), (3930, 5341), (4578, 4585)]