66320420

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{54361}}^1$

素因数の和:54431

約数の個数: 24

約数和(自身を含む): 141558648

約数和(自身を除く): 75238228

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 54361, 108722, 217444, 271805, 543610, 1087220, 3316021, 6632042, 13264084, 16580105, 33160210, 66320420]

約数ペア:

[(1, 66320420), (2, 33160210), (4, 16580105), (5, 13264084), (10, 6632042), (20, 3316021), (61, 1087220), (122, 543610), (244, 271805), (305, 217444), (610, 108722), (1220, 54361)]