20015835

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:240

約数の個数: 64

約数和(自身を含む): 39321600

約数和(自身を除く): 19305765

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 79, 95, 105, 127, 133, 237, 285, 381, 395, 399, 553, 635, 665, 889, 1185, 1501, 1659, 1905, 1995, 2413, 2667, 2765, 4445, 4503, 7239, 7505, 8295, 10033, 10507, 12065, 13335, 16891, 22515, 30099, 31521, 36195, 50165, 50673, 52535, 70231, 84455, 150495, 157605, 190627, 210693, 253365, 351155, 571881, 953135, 1053465, 1334389, 2859405, 4003167, 6671945, 20015835]

約数ペア:

[(1, 20015835), (3, 6671945), (5, 4003167), (7, 2859405), (15, 1334389), (19, 1053465), (21, 953135), (35, 571881), (57, 351155), (79, 253365), (95, 210693), (105, 190627), (127, 157605), (133, 150495), (237, 84455), (285, 70231), (381, 52535), (395, 50673), (399, 50165), (553, 36195), (635, 31521), (665, 30099), (889, 22515), (1185, 16891), (1501, 13335), (1659, 12065), (1905, 10507), (1995, 10033), (2413, 8295), (2667, 7505), (2765, 7239), (4445, 4503)]