18699320

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{257}}^1$

素因数の和:392

約数の個数: 64

約数和(自身を含む): 45139680

約数和(自身を除く): 26440360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 107, 136, 170, 214, 257, 340, 428, 514, 535, 680, 856, 1028, 1070, 1285, 1819, 2056, 2140, 2570, 3638, 4280, 4369, 5140, 7276, 8738, 9095, 10280, 14552, 17476, 18190, 21845, 27499, 34952, 36380, 43690, 54998, 72760, 87380, 109996, 137495, 174760, 219992, 274990, 467483, 549980, 934966, 1099960, 1869932, 2337415, 3739864, 4674830, 9349660, 18699320]

約数ペア:

[(1, 18699320), (2, 9349660), (4, 4674830), (5, 3739864), (8, 2337415), (10, 1869932), (17, 1099960), (20, 934966), (34, 549980), (40, 467483), (68, 274990), (85, 219992), (107, 174760), (136, 137495), (170, 109996), (214, 87380), (257, 72760), (340, 54998), (428, 43690), (514, 36380), (535, 34952), (680, 27499), (856, 21845), (1028, 18190), (1070, 17476), (1285, 14552), (1819, 10280), (2056, 9095), (2140, 8738), (2570, 7276), (3638, 5140), (4280, 4369)]