15919780

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{13049}}^1$

素因数の和:13119

約数の個数: 24

約数和(自身を含む): 33982200

約数和(自身を除く): 18062420

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 13049, 26098, 52196, 65245, 130490, 260980, 795989, 1591978, 3183956, 3979945, 7959890, 15919780]

約数ペア:

[(1, 15919780), (2, 7959890), (4, 3979945), (5, 3183956), (10, 1591978), (20, 795989), (61, 260980), (122, 130490), (244, 65245), (305, 52196), (610, 26098), (1220, 13049)]