17823980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{389}}^1$

素因数の和:506

約数の個数: 48

約数和(自身を含む): 39312000

約数和(自身を除く): 21488020

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 79, 116, 145, 158, 290, 316, 389, 395, 580, 778, 790, 1556, 1580, 1945, 2291, 3890, 4582, 7780, 9164, 11281, 11455, 22562, 22910, 30731, 45124, 45820, 56405, 61462, 112810, 122924, 153655, 225620, 307310, 614620, 891199, 1782398, 3564796, 4455995, 8911990, 17823980]

約数ペア:

[(1, 17823980), (2, 8911990), (4, 4455995), (5, 3564796), (10, 1782398), (20, 891199), (29, 614620), (58, 307310), (79, 225620), (116, 153655), (145, 122924), (158, 112810), (290, 61462), (316, 56405), (389, 45820), (395, 45124), (580, 30731), (778, 22910), (790, 22562), (1556, 11455), (1580, 11281), (1945, 9164), (2291, 7780), (3890, 4582)]