81729060

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{27799}}^1$

素因数の和:27825

約数の個数: 72

約数和(自身を含む): 266212800

約数和(自身を除く): 184483740

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 27799, 55598, 83397, 111196, 138995, 166794, 194593, 277990, 333588, 389186, 416985, 555980, 583779, 778372, 833970, 972965, 1167558, 1362151, 1667940, 1945930, 2335116, 2724302, 2918895, 3891860, 4086453, 5448604, 5837790, 6810755, 8172906, 11675580, 13621510, 16345812, 20432265, 27243020, 40864530, 81729060]

約数ペア:

[(1, 81729060), (2, 40864530), (3, 27243020), (4, 20432265), (5, 16345812), (6, 13621510), (7, 11675580), (10, 8172906), (12, 6810755), (14, 5837790), (15, 5448604), (20, 4086453), (21, 3891860), (28, 2918895), (30, 2724302), (35, 2335116), (42, 1945930), (49, 1667940), (60, 1362151), (70, 1167558), (84, 972965), (98, 833970), (105, 778372), (140, 583779), (147, 555980), (196, 416985), (210, 389186), (245, 333588), (294, 277990), (420, 194593), (490, 166794), (588, 138995), (735, 111196), (980, 83397), (1470, 55598), (2940, 27799)]