21202760

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{17099}}^1$

素因数の和:17141

約数の個数: 32

約数和(自身を含む): 49248000

約数和(自身を除く): 28045240

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 17099, 34198, 68396, 85495, 136792, 170990, 341980, 530069, 683960, 1060138, 2120276, 2650345, 4240552, 5300690, 10601380, 21202760]

約数ペア:

[(1, 21202760), (2, 10601380), (4, 5300690), (5, 4240552), (8, 2650345), (10, 2120276), (20, 1060138), (31, 683960), (40, 530069), (62, 341980), (124, 170990), (155, 136792), (248, 85495), (310, 68396), (620, 34198), (1240, 17099)]