18968235

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:308

約数の個数: 64

約数和(自身を含む): 36771840

約数和(自身を除く): 17803605

約数列:

[1, 3, 5, 11, 13, 15, 33, 37, 39, 55, 65, 111, 143, 165, 185, 195, 239, 407, 429, 481, 555, 715, 717, 1195, 1221, 1443, 2035, 2145, 2405, 2629, 3107, 3585, 5291, 6105, 7215, 7887, 8843, 9321, 13145, 15535, 15873, 26455, 26529, 34177, 39435, 44215, 46605, 79365, 97273, 102531, 114959, 132645, 170885, 291819, 344877, 486365, 512655, 574795, 1264549, 1459095, 1724385, 3793647, 6322745, 18968235]

約数ペア:

[(1, 18968235), (3, 6322745), (5, 3793647), (11, 1724385), (13, 1459095), (15, 1264549), (33, 574795), (37, 512655), (39, 486365), (55, 344877), (65, 291819), (111, 170885), (143, 132645), (165, 114959), (185, 102531), (195, 97273), (239, 79365), (407, 46605), (429, 44215), (481, 39435), (555, 34177), (715, 26529), (717, 26455), (1195, 15873), (1221, 15535), (1443, 13145), (2035, 9321), (2145, 8843), (2405, 7887), (2629, 7215), (3107, 6105), (3585, 5291)]