20390032

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{587}}^1$

素因数の和:775

約数の個数: 40

約数和(自身を含む): 42872256

約数和(自身を除く): 22482224

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 167, 208, 334, 587, 668, 1174, 1336, 2171, 2348, 2672, 4342, 4696, 7631, 8684, 9392, 15262, 17368, 30524, 34736, 61048, 98029, 122096, 196058, 392116, 784232, 1274377, 1568464, 2548754, 5097508, 10195016, 20390032]

約数ペア:

[(1, 20390032), (2, 10195016), (4, 5097508), (8, 2548754), (13, 1568464), (16, 1274377), (26, 784232), (52, 392116), (104, 196058), (167, 122096), (208, 98029), (334, 61048), (587, 34736), (668, 30524), (1174, 17368), (1336, 15262), (2171, 9392), (2348, 8684), (2672, 7631), (4342, 4696)]