20305649

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{251}}^1$

素因数の和:405

約数の個数: 24

約数和(自身を含む): 25740288

約数和(自身を除く): 5434639

約数列:

[1, 7, 13, 49, 91, 127, 251, 637, 889, 1651, 1757, 3263, 6223, 11557, 12299, 22841, 31877, 80899, 159887, 223139, 414401, 1561973, 2900807, 20305649]

約数ペア:

[(1, 20305649), (7, 2900807), (13, 1561973), (49, 414401), (91, 223139), (127, 159887), (251, 80899), (637, 31877), (889, 22841), (1651, 12299), (1757, 11557), (3263, 6223)]