21492760

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31607}}^1$

素因数の和:31635

約数の個数: 32

約数和(自身を含む): 51204960

約数和(自身を除く): 29712200

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 31607, 63214, 126428, 158035, 252856, 316070, 537319, 632140, 1074638, 1264280, 2149276, 2686595, 4298552, 5373190, 10746380, 21492760]

約数ペア:

[(1, 21492760), (2, 10746380), (4, 5373190), (5, 4298552), (8, 2686595), (10, 2149276), (17, 1264280), (20, 1074638), (34, 632140), (40, 537319), (68, 316070), (85, 252856), (136, 158035), (170, 126428), (340, 63214), (680, 31607)]