18405280

素因数分解:

$2^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{3109}}^1$

素因数の和:3161

約数の個数: 48

約数和(自身を含む): 44672040

約数和(自身を除く): 26266760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 74, 80, 148, 160, 185, 296, 370, 592, 740, 1184, 1480, 2960, 3109, 5920, 6218, 12436, 15545, 24872, 31090, 49744, 62180, 99488, 115033, 124360, 230066, 248720, 460132, 497440, 575165, 920264, 1150330, 1840528, 2300660, 3681056, 4601320, 9202640, 18405280]

約数ペア:

[(1, 18405280), (2, 9202640), (4, 4601320), (5, 3681056), (8, 2300660), (10, 1840528), (16, 1150330), (20, 920264), (32, 575165), (37, 497440), (40, 460132), (74, 248720), (80, 230066), (148, 124360), (160, 115033), (185, 99488), (296, 62180), (370, 49744), (592, 31090), (740, 24872), (1184, 15545), (1480, 12436), (2960, 6218), (3109, 5920)]