18666680

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{283}}^1$

素因数の和:408

約数の個数: 64

約数和(自身を含む): 45087840

約数和(自身を除く): 26421160

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 97, 136, 170, 194, 283, 340, 388, 485, 566, 680, 776, 970, 1132, 1415, 1649, 1940, 2264, 2830, 3298, 3880, 4811, 5660, 6596, 8245, 9622, 11320, 13192, 16490, 19244, 24055, 27451, 32980, 38488, 48110, 54902, 65960, 96220, 109804, 137255, 192440, 219608, 274510, 466667, 549020, 933334, 1098040, 1866668, 2333335, 3733336, 4666670, 9333340, 18666680]

約数ペア:

[(1, 18666680), (2, 9333340), (4, 4666670), (5, 3733336), (8, 2333335), (10, 1866668), (17, 1098040), (20, 933334), (34, 549020), (40, 466667), (68, 274510), (85, 219608), (97, 192440), (136, 137255), (170, 109804), (194, 96220), (283, 65960), (340, 54902), (388, 48110), (485, 38488), (566, 32980), (680, 27451), (776, 24055), (970, 19244), (1132, 16490), (1415, 13192), (1649, 11320), (1940, 9622), (2264, 8245), (2830, 6596), (3298, 5660), (3880, 4811)]