21130185

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{491}}^1$

素因数の和:669

約数の個数: 32

約数和(自身を含む): 35896320

約数和(自身を除く): 14766135

約数列:

[1, 3, 5, 15, 19, 57, 95, 151, 285, 453, 491, 755, 1473, 2265, 2455, 2869, 7365, 8607, 9329, 14345, 27987, 43035, 46645, 74141, 139935, 222423, 370705, 1112115, 1408679, 4226037, 7043395, 21130185]

約数ペア:

[(1, 21130185), (3, 7043395), (5, 4226037), (15, 1408679), (19, 1112115), (57, 370705), (95, 222423), (151, 139935), (285, 74141), (453, 46645), (491, 43035), (755, 27987), (1473, 14345), (2265, 9329), (2455, 8607), (2869, 7365)]