397883980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{90019}}^1$

素因数の和:90058

約数の個数: 48

約数和(自身を含む): 952771680

約数和(自身を除く): 554887700

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 90019, 180038, 360076, 450095, 900190, 1170247, 1530323, 1800380, 2340494, 3060646, 4680988, 5851235, 6121292, 7651615, 11702470, 15303230, 19894199, 23404940, 30606460, 39788398, 79576796, 99470995, 198941990, 397883980]

約数ペア:

[(1, 397883980), (2, 198941990), (4, 99470995), (5, 79576796), (10, 39788398), (13, 30606460), (17, 23404940), (20, 19894199), (26, 15303230), (34, 11702470), (52, 7651615), (65, 6121292), (68, 5851235), (85, 4680988), (130, 3060646), (170, 2340494), (221, 1800380), (260, 1530323), (340, 1170247), (442, 900190), (884, 450095), (1105, 360076), (2210, 180038), (4420, 90019)]