21579545

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{331}}^1$

素因数の和:425

約数の個数: 32

約数和(自身を含む): 30119040

約数和(自身を除く): 8539495

約数列:

[1, 5, 13, 17, 59, 65, 85, 221, 295, 331, 767, 1003, 1105, 1655, 3835, 4303, 5015, 5627, 13039, 19529, 21515, 28135, 65195, 73151, 97645, 253877, 331993, 365755, 1269385, 1659965, 4315909, 21579545]

約数ペア:

[(1, 21579545), (5, 4315909), (13, 1659965), (17, 1269385), (59, 365755), (65, 331993), (85, 253877), (221, 97645), (295, 73151), (331, 65195), (767, 28135), (1003, 21515), (1105, 19529), (1655, 13039), (3835, 5627), (4303, 5015)]