20300320

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1787}}^1$

素因数の和:1873

約数の個数: 48

約数和(自身を含む): 48662208

約数和(自身を除く): 28361888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 568, 710, 1136, 1420, 1787, 2272, 2840, 3574, 5680, 7148, 8935, 11360, 14296, 17870, 28592, 35740, 57184, 71480, 126877, 142960, 253754, 285920, 507508, 634385, 1015016, 1268770, 2030032, 2537540, 4060064, 5075080, 10150160, 20300320]

約数ペア:

[(1, 20300320), (2, 10150160), (4, 5075080), (5, 4060064), (8, 2537540), (10, 2030032), (16, 1268770), (20, 1015016), (32, 634385), (40, 507508), (71, 285920), (80, 253754), (142, 142960), (160, 126877), (284, 71480), (355, 57184), (568, 35740), (710, 28592), (1136, 17870), (1420, 14296), (1787, 11360), (2272, 8935), (2840, 7148), (3574, 5680)]