12988120

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5323}}^1$

素因数の和:5395

約数の個数: 32

約数和(自身を含む): 29707920

約数和(自身を除く): 16719800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 5323, 10646, 21292, 26615, 42584, 53230, 106460, 212920, 324703, 649406, 1298812, 1623515, 2597624, 3247030, 6494060, 12988120]

約数ペア:

[(1, 12988120), (2, 6494060), (4, 3247030), (5, 2597624), (8, 1623515), (10, 1298812), (20, 649406), (40, 324703), (61, 212920), (122, 106460), (244, 53230), (305, 42584), (488, 26615), (610, 21292), (1220, 10646), (2440, 5323)]