990138820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{264743}}^1$

素因数の和:264780

約数の個数: 48

約数和(自身を含む): 2401757568

約数和(自身を除く): 1411618748

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 264743, 529486, 1058972, 1323715, 2647430, 2912173, 4500631, 5294860, 5824346, 9001262, 11648692, 14560865, 18002524, 22503155, 29121730, 45006310, 49506941, 58243460, 90012620, 99013882, 198027764, 247534705, 495069410, 990138820]

約数ペア:

[(1, 990138820), (2, 495069410), (4, 247534705), (5, 198027764), (10, 99013882), (11, 90012620), (17, 58243460), (20, 49506941), (22, 45006310), (34, 29121730), (44, 22503155), (55, 18002524), (68, 14560865), (85, 11648692), (110, 9001262), (170, 5824346), (187, 5294860), (220, 4500631), (340, 2912173), (374, 2647430), (748, 1323715), (935, 1058972), (1870, 529486), (3740, 264743)]