81332840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{613}}^1$

素因数の和:762

約数の個数: 64

約数和(自身を含む): 190978560

約数和(自身を除く): 109645720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 107, 124, 155, 214, 248, 310, 428, 535, 613, 620, 856, 1070, 1226, 1240, 2140, 2452, 3065, 3317, 4280, 4904, 6130, 6634, 12260, 13268, 16585, 19003, 24520, 26536, 33170, 38006, 65591, 66340, 76012, 95015, 131182, 132680, 152024, 190030, 262364, 327955, 380060, 524728, 655910, 760120, 1311820, 2033321, 2623640, 4066642, 8133284, 10166605, 16266568, 20333210, 40666420, 81332840]

約数ペア:

[(1, 81332840), (2, 40666420), (4, 20333210), (5, 16266568), (8, 10166605), (10, 8133284), (20, 4066642), (31, 2623640), (40, 2033321), (62, 1311820), (107, 760120), (124, 655910), (155, 524728), (214, 380060), (248, 327955), (310, 262364), (428, 190030), (535, 152024), (613, 132680), (620, 131182), (856, 95015), (1070, 76012), (1226, 66340), (1240, 65591), (2140, 38006), (2452, 33170), (3065, 26536), (3317, 24520), (4280, 19003), (4904, 16585), (6130, 13268), (6634, 12260)]