12128415

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^2$

素因数の和:140

約数の個数: 48

約数和(自身を含む): 21999264

約数和(自身を除く): 9870849

約数列:

[1, 3, 5, 13, 15, 37, 39, 41, 65, 111, 123, 185, 195, 205, 481, 533, 555, 615, 1443, 1517, 1599, 1681, 2405, 2665, 4551, 5043, 7215, 7585, 7995, 8405, 19721, 21853, 22755, 25215, 59163, 62197, 65559, 98605, 109265, 186591, 295815, 310985, 327795, 808561, 932955, 2425683, 4042805, 12128415]

約数ペア:

[(1, 12128415), (3, 4042805), (5, 2425683), (13, 932955), (15, 808561), (37, 327795), (39, 310985), (41, 295815), (65, 186591), (111, 109265), (123, 98605), (185, 65559), (195, 62197), (205, 59163), (481, 25215), (533, 22755), (555, 21853), (615, 19721), (1443, 8405), (1517, 7995), (1599, 7585), (1681, 7215), (2405, 5043), (2665, 4551)]