21350785

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1$

素因数の和:225

約数の個数: 32

約数和(自身を含む): 28366848

約数和(自身を除く): 7016063

約数列:

[1, 5, 23, 31, 53, 113, 115, 155, 265, 565, 713, 1219, 1643, 2599, 3503, 3565, 5989, 6095, 8215, 12995, 17515, 29945, 37789, 80569, 137747, 185659, 188945, 402845, 688735, 928295, 4270157, 21350785]

約数ペア:

[(1, 21350785), (5, 4270157), (23, 928295), (31, 688735), (53, 402845), (113, 188945), (115, 185659), (155, 137747), (265, 80569), (565, 37789), (713, 29945), (1219, 17515), (1643, 12995), (2599, 8215), (3503, 6095), (3565, 5989)]