18908892640

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{976699}}^1$

素因数の和:976736

約数の個数: 72

約数和(自身を含む): 49102615800

約数和(自身を除く): 30193723160

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 121, 160, 176, 220, 242, 352, 440, 484, 605, 880, 968, 1210, 1760, 1936, 2420, 3872, 4840, 9680, 19360, 976699, 1953398, 3906796, 4883495, 7813592, 9766990, 10743689, 15627184, 19533980, 21487378, 31254368, 39067960, 42974756, 53718445, 78135920, 85949512, 107436890, 118180579, 156271840, 171899024, 214873780, 236361158, 343798048, 429747560, 472722316, 590902895, 859495120, 945444632, 1181805790, 1718990240, 1890889264, 2363611580, 3781778528, 4727223160, 9454446320, 18908892640]

約数ペア:

[(1, 18908892640), (2, 9454446320), (4, 4727223160), (5, 3781778528), (8, 2363611580), (10, 1890889264), (11, 1718990240), (16, 1181805790), (20, 945444632), (22, 859495120), (32, 590902895), (40, 472722316), (44, 429747560), (55, 343798048), (80, 236361158), (88, 214873780), (110, 171899024), (121, 156271840), (160, 118180579), (176, 107436890), (220, 85949512), (242, 78135920), (352, 53718445), (440, 42974756), (484, 39067960), (605, 31254368), (880, 21487378), (968, 19533980), (1210, 15627184), (1760, 10743689), (1936, 9766990), (2420, 7813592), (3872, 4883495), (4840, 3906796), (9680, 1953398), (19360, 976699)]