21421167245

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{53093}}^1$

素因数の和:53285

約数の個数: 32

約数和(自身を含む): 28135572480

約数和(自身を除く): 6714405235

約数列:

[1, 5, 19, 31, 95, 137, 155, 589, 685, 2603, 2945, 4247, 13015, 21235, 53093, 80693, 265465, 403465, 1008767, 1645883, 5043835, 7273741, 8229415, 31271777, 36368705, 138201079, 156358885, 225485971, 691005395, 1127429855, 4284233449, 21421167245]

約数ペア:

[(1, 21421167245), (5, 4284233449), (19, 1127429855), (31, 691005395), (95, 225485971), (137, 156358885), (155, 138201079), (589, 36368705), (685, 31271777), (2603, 8229415), (2945, 7273741), (4247, 5043835), (13015, 1645883), (21235, 1008767), (53093, 403465), (80693, 265465)]