20898352

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{521}}^1$

素因数の和:661

約数の個数: 40

約数和(自身を含む): 42720480

約数和(自身を除く): 21822128

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 109, 184, 218, 368, 436, 521, 872, 1042, 1744, 2084, 2507, 4168, 5014, 8336, 10028, 11983, 20056, 23966, 40112, 47932, 56789, 95864, 113578, 191728, 227156, 454312, 908624, 1306147, 2612294, 5224588, 10449176, 20898352]

約数ペア:

[(1, 20898352), (2, 10449176), (4, 5224588), (8, 2612294), (16, 1306147), (23, 908624), (46, 454312), (92, 227156), (109, 191728), (184, 113578), (218, 95864), (368, 56789), (436, 47932), (521, 40112), (872, 23966), (1042, 20056), (1744, 11983), (2084, 10028), (2507, 8336), (4168, 5014)]