15860440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{509}}^1$

素因数の和:580

約数の個数: 64

約数和(自身を含む): 38556000

約数和(自身を除く): 22695560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 41, 76, 82, 95, 152, 164, 190, 205, 328, 380, 410, 509, 760, 779, 820, 1018, 1558, 1640, 2036, 2545, 3116, 3895, 4072, 5090, 6232, 7790, 9671, 10180, 15580, 19342, 20360, 20869, 31160, 38684, 41738, 48355, 77368, 83476, 96710, 104345, 166952, 193420, 208690, 386840, 396511, 417380, 793022, 834760, 1586044, 1982555, 3172088, 3965110, 7930220, 15860440]

約数ペア:

[(1, 15860440), (2, 7930220), (4, 3965110), (5, 3172088), (8, 1982555), (10, 1586044), (19, 834760), (20, 793022), (38, 417380), (40, 396511), (41, 386840), (76, 208690), (82, 193420), (95, 166952), (152, 104345), (164, 96710), (190, 83476), (205, 77368), (328, 48355), (380, 41738), (410, 38684), (509, 31160), (760, 20869), (779, 20360), (820, 19342), (1018, 15580), (1558, 10180), (1640, 9671), (2036, 7790), (2545, 6232), (3116, 5090), (3895, 4072)]