18664780

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{15299}}^1$

素因数の和:15369

約数の個数: 24

約数和(自身を含む): 39841200

約数和(自身を除く): 21176420

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 15299, 30598, 61196, 76495, 152990, 305980, 933239, 1866478, 3732956, 4666195, 9332390, 18664780]

約数ペア:

[(1, 18664780), (2, 9332390), (4, 4666195), (5, 3732956), (10, 1866478), (20, 933239), (61, 305980), (122, 152990), (244, 76495), (305, 61196), (610, 30598), (1220, 15299)]