80672020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{421}}^1$

素因数の和:521

約数の個数: 96

約数和(自身を含む): 202478976

約数和(自身を除く): 121806956

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 67, 110, 130, 134, 143, 220, 260, 268, 286, 335, 421, 572, 670, 715, 737, 842, 871, 1340, 1430, 1474, 1684, 1742, 2105, 2860, 2948, 3484, 3685, 4210, 4355, 4631, 5473, 7370, 8420, 8710, 9262, 9581, 10946, 14740, 17420, 18524, 19162, 21892, 23155, 27365, 28207, 38324, 46310, 47905, 54730, 56414, 60203, 92620, 95810, 109460, 112828, 120406, 141035, 191620, 240812, 282070, 301015, 310277, 366691, 564140, 602030, 620554, 733382, 1204060, 1241108, 1466764, 1551385, 1833455, 3102770, 3666910, 4033601, 6205540, 7333820, 8067202, 16134404, 20168005, 40336010, 80672020]

約数ペア:

[(1, 80672020), (2, 40336010), (4, 20168005), (5, 16134404), (10, 8067202), (11, 7333820), (13, 6205540), (20, 4033601), (22, 3666910), (26, 3102770), (44, 1833455), (52, 1551385), (55, 1466764), (65, 1241108), (67, 1204060), (110, 733382), (130, 620554), (134, 602030), (143, 564140), (220, 366691), (260, 310277), (268, 301015), (286, 282070), (335, 240812), (421, 191620), (572, 141035), (670, 120406), (715, 112828), (737, 109460), (842, 95810), (871, 92620), (1340, 60203), (1430, 56414), (1474, 54730), (1684, 47905), (1742, 46310), (2105, 38324), (2860, 28207), (2948, 27365), (3484, 23155), (3685, 21892), (4210, 19162), (4355, 18524), (4631, 17420), (5473, 14740), (7370, 10946), (8420, 9581), (8710, 9262)]