20100761980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{112207}}^1$

素因数の和:112295

約数の個数: 72

約数和(自身を含む): 46571257152

約数和(自身を除く): 26470495172

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 169, 212, 260, 265, 338, 530, 676, 689, 845, 1060, 1378, 1690, 2756, 3380, 3445, 6890, 8957, 13780, 17914, 35828, 44785, 89570, 112207, 179140, 224414, 448828, 561035, 1122070, 1458691, 2244140, 2917382, 5834764, 5946971, 7293455, 11893942, 14586910, 18962983, 23787884, 29173820, 29734855, 37925966, 59469710, 75851932, 77310623, 94814915, 118939420, 154621246, 189629830, 309242492, 379259660, 386553115, 773106230, 1005038099, 1546212460, 2010076198, 4020152396, 5025190495, 10050380990, 20100761980]

約数ペア:

[(1, 20100761980), (2, 10050380990), (4, 5025190495), (5, 4020152396), (10, 2010076198), (13, 1546212460), (20, 1005038099), (26, 773106230), (52, 386553115), (53, 379259660), (65, 309242492), (106, 189629830), (130, 154621246), (169, 118939420), (212, 94814915), (260, 77310623), (265, 75851932), (338, 59469710), (530, 37925966), (676, 29734855), (689, 29173820), (845, 23787884), (1060, 18962983), (1378, 14586910), (1690, 11893942), (2756, 7293455), (3380, 5946971), (3445, 5834764), (6890, 2917382), (8957, 2244140), (13780, 1458691), (17914, 1122070), (35828, 561035), (44785, 448828), (89570, 224414), (112207, 179140)]