390915

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1$

素因数の和:108

約数の個数: 48

約数和(自身を含む): 831168

約数和(自身を除く): 440253

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 45, 51, 63, 73, 85, 105, 119, 153, 219, 255, 315, 357, 365, 511, 595, 657, 765, 1071, 1095, 1241, 1533, 1785, 2555, 3285, 3723, 4599, 5355, 6205, 7665, 8687, 11169, 18615, 22995, 26061, 43435, 55845, 78183, 130305, 390915]

約数ペア:

[(1, 390915), (3, 130305), (5, 78183), (7, 55845), (9, 43435), (15, 26061), (17, 22995), (21, 18615), (35, 11169), (45, 8687), (51, 7665), (63, 6205), (73, 5355), (85, 4599), (105, 3723), (119, 3285), (153, 2555), (219, 1785), (255, 1533), (315, 1241), (357, 1095), (365, 1071), (511, 765), (595, 657)]