20575360

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2473}}^1$

素因数の和:2505

約数の個数: 64

約数和(自身を含む): 52993080

約数和(自身を除く): 32417720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 2473, 4160, 4946, 8320, 9892, 12365, 19784, 24730, 32149, 39568, 49460, 64298, 79136, 98920, 128596, 158272, 160745, 197840, 257192, 316544, 321490, 395680, 514384, 642980, 791360, 1028768, 1285960, 1582720, 2057536, 2571920, 4115072, 5143840, 10287680, 20575360]

約数ペア:

[(1, 20575360), (2, 10287680), (4, 5143840), (5, 4115072), (8, 2571920), (10, 2057536), (13, 1582720), (16, 1285960), (20, 1028768), (26, 791360), (32, 642980), (40, 514384), (52, 395680), (64, 321490), (65, 316544), (80, 257192), (104, 197840), (128, 160745), (130, 158272), (160, 128596), (208, 98920), (260, 79136), (320, 64298), (416, 49460), (520, 39568), (640, 32149), (832, 24730), (1040, 19784), (1664, 12365), (2080, 9892), (2473, 8320), (4160, 4946)]