4065460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{409}}^1$

素因数の和:496

約数の個数: 48

約数和(自身を含む): 9918720

約数和(自身を除く): 5853260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 409, 497, 710, 818, 994, 1420, 1636, 1988, 2045, 2485, 2863, 4090, 4970, 5726, 8180, 9940, 11452, 14315, 28630, 29039, 57260, 58078, 116156, 145195, 203273, 290390, 406546, 580780, 813092, 1016365, 2032730, 4065460]

約数ペア:

[(1, 4065460), (2, 2032730), (4, 1016365), (5, 813092), (7, 580780), (10, 406546), (14, 290390), (20, 203273), (28, 145195), (35, 116156), (70, 58078), (71, 57260), (140, 29039), (142, 28630), (284, 14315), (355, 11452), (409, 9940), (497, 8180), (710, 5726), (818, 4970), (994, 4090), (1420, 2863), (1636, 2485), (1988, 2045)]