21100040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40577}}^1$

素因数の和:40601

約数の個数: 32

約数和(自身を含む): 51128280

約数和(自身を除く): 30028240

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40577, 81154, 162308, 202885, 324616, 405770, 527501, 811540, 1055002, 1623080, 2110004, 2637505, 4220008, 5275010, 10550020, 21100040]

約数ペア:

[(1, 21100040), (2, 10550020), (4, 5275010), (5, 4220008), (8, 2637505), (10, 2110004), (13, 1623080), (20, 1055002), (26, 811540), (40, 527501), (52, 405770), (65, 324616), (104, 202885), (130, 162308), (260, 81154), (520, 40577)]