21747115

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{17609}}^1$

素因数の和:17646

約数の個数: 16

約数和(自身を含む): 29584800

約数和(自身を除く): 7837685

約数列:

[1, 5, 13, 19, 65, 95, 247, 1235, 17609, 88045, 228917, 334571, 1144585, 1672855, 4349423, 21747115]

約数ペア:

[(1, 21747115), (5, 4349423), (13, 1672855), (19, 1144585), (65, 334571), (95, 228917), (247, 88045), (1235, 17609)]