21201440

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{10193}}^1$

素因数の和:10221

約数の個数: 48

約数和(自身を含む): 53946648

約数和(自身を除く): 32745208

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 10193, 20386, 40772, 50965, 81544, 101930, 132509, 163088, 203860, 265018, 326176, 407720, 530036, 662545, 815440, 1060072, 1325090, 1630880, 2120144, 2650180, 4240288, 5300360, 10600720, 21201440]

約数ペア:

[(1, 21201440), (2, 10600720), (4, 5300360), (5, 4240288), (8, 2650180), (10, 2120144), (13, 1630880), (16, 1325090), (20, 1060072), (26, 815440), (32, 662545), (40, 530036), (52, 407720), (65, 326176), (80, 265018), (104, 203860), (130, 163088), (160, 132509), (208, 101930), (260, 81544), (416, 50965), (520, 40772), (1040, 20386), (2080, 10193)]