1285928840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{25657}}^1$

素因数の和:25854

約数の個数: 64

約数和(自身を含む): 3325276800

約数和(自身を除く): 2039347960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 179, 280, 358, 716, 895, 1253, 1432, 1790, 2506, 3580, 5012, 6265, 7160, 10024, 12530, 25060, 25657, 50120, 51314, 102628, 128285, 179599, 205256, 256570, 359198, 513140, 718396, 897995, 1026280, 1436792, 1795990, 3591980, 4592603, 7183960, 9185206, 18370412, 22963015, 32148221, 36740824, 45926030, 64296442, 91852060, 128592884, 160741105, 183704120, 257185768, 321482210, 642964420, 1285928840]

約数ペア:

[(1, 1285928840), (2, 642964420), (4, 321482210), (5, 257185768), (7, 183704120), (8, 160741105), (10, 128592884), (14, 91852060), (20, 64296442), (28, 45926030), (35, 36740824), (40, 32148221), (56, 22963015), (70, 18370412), (140, 9185206), (179, 7183960), (280, 4592603), (358, 3591980), (716, 1795990), (895, 1436792), (1253, 1026280), (1432, 897995), (1790, 718396), (2506, 513140), (3580, 359198), (5012, 256570), (6265, 205256), (7160, 179599), (10024, 128285), (12530, 102628), (25060, 51314), (25657, 50120)]