21103472

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1429}}^1$

素因数の和:1521

約数の個数: 40

約数和(自身を含む): 44684640

約数和(自身を除く): 23581168

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 71, 104, 142, 208, 284, 568, 923, 1136, 1429, 1846, 2858, 3692, 5716, 7384, 11432, 14768, 18577, 22864, 37154, 74308, 101459, 148616, 202918, 297232, 405836, 811672, 1318967, 1623344, 2637934, 5275868, 10551736, 21103472]

約数ペア:

[(1, 21103472), (2, 10551736), (4, 5275868), (8, 2637934), (13, 1623344), (16, 1318967), (26, 811672), (52, 405836), (71, 297232), (104, 202918), (142, 148616), (208, 101459), (284, 74308), (568, 37154), (923, 22864), (1136, 18577), (1429, 14768), (1846, 11432), (2858, 7384), (3692, 5716)]