81525040

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{463}}^1$

素因数の和:578

約数の個数: 80

約数和(自身を含む): 198844416

約数和(自身を除く): 117319376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 71, 80, 124, 142, 155, 248, 284, 310, 355, 463, 496, 568, 620, 710, 926, 1136, 1240, 1420, 1852, 2201, 2315, 2480, 2840, 3704, 4402, 4630, 5680, 7408, 8804, 9260, 11005, 14353, 17608, 18520, 22010, 28706, 32873, 35216, 37040, 44020, 57412, 65746, 71765, 88040, 114824, 131492, 143530, 164365, 176080, 229648, 262984, 287060, 328730, 525968, 574120, 657460, 1019063, 1148240, 1314920, 2038126, 2629840, 4076252, 5095315, 8152504, 10190630, 16305008, 20381260, 40762520, 81525040]

約数ペア:

[(1, 81525040), (2, 40762520), (4, 20381260), (5, 16305008), (8, 10190630), (10, 8152504), (16, 5095315), (20, 4076252), (31, 2629840), (40, 2038126), (62, 1314920), (71, 1148240), (80, 1019063), (124, 657460), (142, 574120), (155, 525968), (248, 328730), (284, 287060), (310, 262984), (355, 229648), (463, 176080), (496, 164365), (568, 143530), (620, 131492), (710, 114824), (926, 88040), (1136, 71765), (1240, 65746), (1420, 57412), (1852, 44020), (2201, 37040), (2315, 35216), (2480, 32873), (2840, 28706), (3704, 22010), (4402, 18520), (4630, 17608), (5680, 14353), (7408, 11005), (8804, 9260)]