20657890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{11047}}^1$

素因数の和:11082

約数の個数: 32

約数和(自身を含む): 42954624

約数和(自身を除く): 22296734

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 85, 110, 170, 187, 374, 935, 1870, 11047, 22094, 55235, 110470, 121517, 187799, 243034, 375598, 607585, 938995, 1215170, 1877990, 2065789, 4131578, 10328945, 20657890]

約数ペア:

[(1, 20657890), (2, 10328945), (5, 4131578), (10, 2065789), (11, 1877990), (17, 1215170), (22, 938995), (34, 607585), (55, 375598), (85, 243034), (110, 187799), (170, 121517), (187, 110470), (374, 55235), (935, 22094), (1870, 11047)]