16261840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{409}}^1$

素因数の和:500

約数の個数: 80

約数和(自身を含む): 43925760

約数和(自身を除く): 27663920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 71, 80, 112, 140, 142, 280, 284, 355, 409, 497, 560, 568, 710, 818, 994, 1136, 1420, 1636, 1988, 2045, 2485, 2840, 2863, 3272, 3976, 4090, 4970, 5680, 5726, 6544, 7952, 8180, 9940, 11452, 14315, 16360, 19880, 22904, 28630, 29039, 32720, 39760, 45808, 57260, 58078, 114520, 116156, 145195, 203273, 229040, 232312, 290390, 406546, 464624, 580780, 813092, 1016365, 1161560, 1626184, 2032730, 2323120, 3252368, 4065460, 8130920, 16261840]

約数ペア:

[(1, 16261840), (2, 8130920), (4, 4065460), (5, 3252368), (7, 2323120), (8, 2032730), (10, 1626184), (14, 1161560), (16, 1016365), (20, 813092), (28, 580780), (35, 464624), (40, 406546), (56, 290390), (70, 232312), (71, 229040), (80, 203273), (112, 145195), (140, 116156), (142, 114520), (280, 58078), (284, 57260), (355, 45808), (409, 39760), (497, 32720), (560, 29039), (568, 28630), (710, 22904), (818, 19880), (994, 16360), (1136, 14315), (1420, 11452), (1636, 9940), (1988, 8180), (2045, 7952), (2485, 6544), (2840, 5726), (2863, 5680), (3272, 4970), (3976, 4090)]