21550215

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{523}}^1$

素因数の和:639

約数の個数: 32

約数和(自身を含む): 35917056

約数和(自身を除く): 14366841

約数列:

[1, 3, 5, 15, 41, 67, 123, 201, 205, 335, 523, 615, 1005, 1569, 2615, 2747, 7845, 8241, 13735, 21443, 35041, 41205, 64329, 105123, 107215, 175205, 321645, 525615, 1436681, 4310043, 7183405, 21550215]

約数ペア:

[(1, 21550215), (3, 7183405), (5, 4310043), (15, 1436681), (41, 525615), (67, 321645), (123, 175205), (201, 107215), (205, 105123), (335, 64329), (523, 41205), (615, 35041), (1005, 21443), (1569, 13735), (2615, 8241), (2747, 7845)]