31440440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1009}}^1$

素因数の和:1080

約数の個数: 64

約数和(自身を含む): 76356000

約数和(自身を除く): 44915560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 41, 76, 82, 95, 152, 164, 190, 205, 328, 380, 410, 760, 779, 820, 1009, 1558, 1640, 2018, 3116, 3895, 4036, 5045, 6232, 7790, 8072, 10090, 15580, 19171, 20180, 31160, 38342, 40360, 41369, 76684, 82738, 95855, 153368, 165476, 191710, 206845, 330952, 383420, 413690, 766840, 786011, 827380, 1572022, 1654760, 3144044, 3930055, 6288088, 7860110, 15720220, 31440440]

約数ペア:

[(1, 31440440), (2, 15720220), (4, 7860110), (5, 6288088), (8, 3930055), (10, 3144044), (19, 1654760), (20, 1572022), (38, 827380), (40, 786011), (41, 766840), (76, 413690), (82, 383420), (95, 330952), (152, 206845), (164, 191710), (190, 165476), (205, 153368), (328, 95855), (380, 82738), (410, 76684), (760, 41369), (779, 40360), (820, 38342), (1009, 31160), (1558, 20180), (1640, 19171), (2018, 15580), (3116, 10090), (3895, 8072), (4036, 7790), (5045, 6232)]