21640360

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:267

約数の個数: 96

約数和(自身を含む): 57886920

約数和(自身を除く): 36246560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 61, 70, 98, 122, 140, 181, 196, 244, 245, 280, 305, 362, 392, 427, 488, 490, 610, 724, 854, 905, 980, 1220, 1267, 1448, 1708, 1810, 1960, 2135, 2440, 2534, 2989, 3416, 3620, 4270, 5068, 5978, 6335, 7240, 8540, 8869, 10136, 11041, 11956, 12670, 14945, 17080, 17738, 22082, 23912, 25340, 29890, 35476, 44164, 44345, 50680, 55205, 59780, 70952, 77287, 88328, 88690, 110410, 119560, 154574, 177380, 220820, 309148, 354760, 386435, 441640, 541009, 618296, 772870, 1082018, 1545740, 2164036, 2705045, 3091480, 4328072, 5410090, 10820180, 21640360]

約数ペア:

[(1, 21640360), (2, 10820180), (4, 5410090), (5, 4328072), (7, 3091480), (8, 2705045), (10, 2164036), (14, 1545740), (20, 1082018), (28, 772870), (35, 618296), (40, 541009), (49, 441640), (56, 386435), (61, 354760), (70, 309148), (98, 220820), (122, 177380), (140, 154574), (181, 119560), (196, 110410), (244, 88690), (245, 88328), (280, 77287), (305, 70952), (362, 59780), (392, 55205), (427, 50680), (488, 44345), (490, 44164), (610, 35476), (724, 29890), (854, 25340), (905, 23912), (980, 22082), (1220, 17738), (1267, 17080), (1448, 14945), (1708, 12670), (1810, 11956), (1960, 11041), (2135, 10136), (2440, 8869), (2534, 8540), (2989, 7240), (3416, 6335), (3620, 5978), (4270, 5068)]