890647720

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{5521}}^1$

素因数の和:5678

約数の個数: 64

約数和(自身を含む): 2077376400

約数和(自身を除く): 1186728680

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 109, 148, 185, 218, 296, 370, 436, 545, 740, 872, 1090, 1480, 2180, 4033, 4360, 5521, 8066, 11042, 16132, 20165, 22084, 27605, 32264, 40330, 44168, 55210, 80660, 110420, 161320, 204277, 220840, 408554, 601789, 817108, 1021385, 1203578, 1634216, 2042770, 2407156, 3008945, 4085540, 4814312, 6017890, 8171080, 12035780, 22266193, 24071560, 44532386, 89064772, 111330965, 178129544, 222661930, 445323860, 890647720]

約数ペア:

[(1, 890647720), (2, 445323860), (4, 222661930), (5, 178129544), (8, 111330965), (10, 89064772), (20, 44532386), (37, 24071560), (40, 22266193), (74, 12035780), (109, 8171080), (148, 6017890), (185, 4814312), (218, 4085540), (296, 3008945), (370, 2407156), (436, 2042770), (545, 1634216), (740, 1203578), (872, 1021385), (1090, 817108), (1480, 601789), (2180, 408554), (4033, 220840), (4360, 204277), (5521, 161320), (8066, 110420), (11042, 80660), (16132, 55210), (20165, 44168), (22084, 40330), (27605, 32264)]