645280

素因数分解:

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

素因数の和:161

約数の個数: 48

約数和(自身を含む): 1580040

約数和(自身を除く): 934760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 74, 80, 109, 148, 160, 185, 218, 296, 370, 436, 545, 592, 740, 872, 1090, 1184, 1480, 1744, 2180, 2960, 3488, 4033, 4360, 5920, 8066, 8720, 16132, 17440, 20165, 32264, 40330, 64528, 80660, 129056, 161320, 322640, 645280]

約数ペア:

[(1, 645280), (2, 322640), (4, 161320), (5, 129056), (8, 80660), (10, 64528), (16, 40330), (20, 32264), (32, 20165), (37, 17440), (40, 16132), (74, 8720), (80, 8066), (109, 5920), (148, 4360), (160, 4033), (185, 3488), (218, 2960), (296, 2180), (370, 1744), (436, 1480), (545, 1184), (592, 1090), (740, 872)]