81753560

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{787}}^1$

素因数の和:865

約数の個数: 96

約数和(自身を含む): 218291760

約数和(自身を除く): 136538200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 53, 56, 70, 98, 106, 140, 196, 212, 245, 265, 280, 371, 392, 424, 490, 530, 742, 787, 980, 1060, 1484, 1574, 1855, 1960, 2120, 2597, 2968, 3148, 3710, 3935, 5194, 5509, 6296, 7420, 7870, 10388, 11018, 12985, 14840, 15740, 20776, 22036, 25970, 27545, 31480, 38563, 41711, 44072, 51940, 55090, 77126, 83422, 103880, 110180, 154252, 166844, 192815, 208555, 220360, 291977, 308504, 333688, 385630, 417110, 583954, 771260, 834220, 1167908, 1459885, 1542520, 1668440, 2043839, 2335816, 2919770, 4087678, 5839540, 8175356, 10219195, 11679080, 16350712, 20438390, 40876780, 81753560]

約数ペア:

[(1, 81753560), (2, 40876780), (4, 20438390), (5, 16350712), (7, 11679080), (8, 10219195), (10, 8175356), (14, 5839540), (20, 4087678), (28, 2919770), (35, 2335816), (40, 2043839), (49, 1668440), (53, 1542520), (56, 1459885), (70, 1167908), (98, 834220), (106, 771260), (140, 583954), (196, 417110), (212, 385630), (245, 333688), (265, 308504), (280, 291977), (371, 220360), (392, 208555), (424, 192815), (490, 166844), (530, 154252), (742, 110180), (787, 103880), (980, 83422), (1060, 77126), (1484, 55090), (1574, 51940), (1855, 44072), (1960, 41711), (2120, 38563), (2597, 31480), (2968, 27545), (3148, 25970), (3710, 22036), (3935, 20776), (5194, 15740), (5509, 14840), (6296, 12985), (7420, 11018), (7870, 10388)]