21215544

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{293}}^1\times {\mathrm{431}}^1$

素因数の和:740

約数の個数: 64

約数和(自身を含む): 60963840

約数和(自身を除く): 39748296

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 293, 431, 586, 862, 879, 1172, 1293, 1724, 1758, 2051, 2344, 2586, 3017, 3448, 3516, 4102, 5172, 6034, 6153, 7032, 8204, 9051, 10344, 12068, 12306, 16408, 18102, 24136, 24612, 36204, 49224, 72408, 126283, 252566, 378849, 505132, 757698, 883981, 1010264, 1515396, 1767962, 2651943, 3030792, 3535924, 5303886, 7071848, 10607772, 21215544]

約数ペア:

[(1, 21215544), (2, 10607772), (3, 7071848), (4, 5303886), (6, 3535924), (7, 3030792), (8, 2651943), (12, 1767962), (14, 1515396), (21, 1010264), (24, 883981), (28, 757698), (42, 505132), (56, 378849), (84, 252566), (168, 126283), (293, 72408), (431, 49224), (586, 36204), (862, 24612), (879, 24136), (1172, 18102), (1293, 16408), (1724, 12306), (1758, 12068), (2051, 10344), (2344, 9051), (2586, 8204), (3017, 7032), (3448, 6153), (3516, 6034), (4102, 5172)]