639610120

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{3299}}^1$

素因数の和:3478

約数の個数: 64

約数和(自身を含む): 1489752000

約数和(自身を除く): 850141880

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 131, 148, 185, 262, 296, 370, 524, 655, 740, 1048, 1310, 1480, 2620, 3299, 4847, 5240, 6598, 9694, 13196, 16495, 19388, 24235, 26392, 32990, 38776, 48470, 65980, 96940, 122063, 131960, 193880, 244126, 432169, 488252, 610315, 864338, 976504, 1220630, 1728676, 2160845, 2441260, 3457352, 4321690, 4882520, 8643380, 15990253, 17286760, 31980506, 63961012, 79951265, 127922024, 159902530, 319805060, 639610120]

約数ペア:

[(1, 639610120), (2, 319805060), (4, 159902530), (5, 127922024), (8, 79951265), (10, 63961012), (20, 31980506), (37, 17286760), (40, 15990253), (74, 8643380), (131, 4882520), (148, 4321690), (185, 3457352), (262, 2441260), (296, 2160845), (370, 1728676), (524, 1220630), (655, 976504), (740, 864338), (1048, 610315), (1310, 488252), (1480, 432169), (2620, 244126), (3299, 193880), (4847, 131960), (5240, 122063), (6598, 96940), (9694, 65980), (13196, 48470), (16495, 38776), (19388, 32990), (24235, 26392)]