31482920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{491}}^1$

素因数の和:738

約数の個数: 64

約数和(自身を含む): 81475200

約数和(自身を除く): 49992280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 229, 280, 458, 491, 916, 982, 1145, 1603, 1832, 1964, 2290, 2455, 3206, 3437, 3928, 4580, 4910, 6412, 6874, 8015, 9160, 9820, 12824, 13748, 16030, 17185, 19640, 27496, 32060, 34370, 64120, 68740, 112439, 137480, 224878, 449756, 562195, 787073, 899512, 1124390, 1574146, 2248780, 3148292, 3935365, 4497560, 6296584, 7870730, 15741460, 31482920]

約数ペア:

[(1, 31482920), (2, 15741460), (4, 7870730), (5, 6296584), (7, 4497560), (8, 3935365), (10, 3148292), (14, 2248780), (20, 1574146), (28, 1124390), (35, 899512), (40, 787073), (56, 562195), (70, 449756), (140, 224878), (229, 137480), (280, 112439), (458, 68740), (491, 64120), (916, 34370), (982, 32060), (1145, 27496), (1603, 19640), (1832, 17185), (1964, 16030), (2290, 13748), (2455, 12824), (3206, 9820), (3437, 9160), (3928, 8015), (4580, 6874), (4910, 6412)]