71885940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^4\times {\mathrm{499}}^1$

素因数の和:539

約数の個数: 120

約数和(自身を含む): 235284000

約数和(自身を除く): 163398060

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, 343, 420, 490, 499, 588, 686, 735, 980, 998, 1029, 1372, 1470, 1497, 1715, 1996, 2058, 2401, 2495, 2940, 2994, 3430, 3493, 4116, 4802, 4990, 5145, 5988, 6860, 6986, 7203, 7485, 9604, 9980, 10290, 10479, 12005, 13972, 14406, 14970, 17465, 20580, 20958, 24010, 24451, 28812, 29940, 34930, 36015, 41916, 48020, 48902, 52395, 69860, 72030, 73353, 97804, 104790, 122255, 144060, 146706, 171157, 209580, 244510, 293412, 342314, 366765, 489020, 513471, 684628, 733530, 855785, 1026942, 1198099, 1467060, 1711570, 2053884, 2396198, 2567355, 3423140, 3594297, 4792396, 5134710, 5990495, 7188594, 10269420, 11980990, 14377188, 17971485, 23961980, 35942970, 71885940]

約数ペア:

[(1, 71885940), (2, 35942970), (3, 23961980), (4, 17971485), (5, 14377188), (6, 11980990), (7, 10269420), (10, 7188594), (12, 5990495), (14, 5134710), (15, 4792396), (20, 3594297), (21, 3423140), (28, 2567355), (30, 2396198), (35, 2053884), (42, 1711570), (49, 1467060), (60, 1198099), (70, 1026942), (84, 855785), (98, 733530), (105, 684628), (140, 513471), (147, 489020), (196, 366765), (210, 342314), (245, 293412), (294, 244510), (343, 209580), (420, 171157), (490, 146706), (499, 144060), (588, 122255), (686, 104790), (735, 97804), (980, 73353), (998, 72030), (1029, 69860), (1372, 52395), (1470, 48902), (1497, 48020), (1715, 41916), (1996, 36015), (2058, 34930), (2401, 29940), (2495, 28812), (2940, 24451), (2994, 24010), (3430, 20958), (3493, 20580), (4116, 17465), (4802, 14970), (4990, 14406), (5145, 13972), (5988, 12005), (6860, 10479), (6986, 10290), (7203, 9980), (7485, 9604)]