64878255

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{449}}^1$

素因数の和:505

約数の個数: 72

約数和(自身を含む): 128466000

約数和(自身を除く): 63587745

約数列:

[1, 3, 5, 9, 13, 15, 19, 39, 45, 57, 65, 95, 117, 169, 171, 195, 247, 285, 449, 507, 585, 741, 845, 855, 1235, 1347, 1521, 2223, 2245, 2535, 3211, 3705, 4041, 5837, 6735, 7605, 8531, 9633, 11115, 16055, 17511, 20205, 25593, 28899, 29185, 42655, 48165, 52533, 75881, 76779, 87555, 110903, 127965, 144495, 227643, 262665, 332709, 379405, 383895, 554515, 682929, 998127, 1138215, 1441739, 1663545, 3414645, 4325217, 4990635, 7208695, 12975651, 21626085, 64878255]

約数ペア:

[(1, 64878255), (3, 21626085), (5, 12975651), (9, 7208695), (13, 4990635), (15, 4325217), (19, 3414645), (39, 1663545), (45, 1441739), (57, 1138215), (65, 998127), (95, 682929), (117, 554515), (169, 383895), (171, 379405), (195, 332709), (247, 262665), (285, 227643), (449, 144495), (507, 127965), (585, 110903), (741, 87555), (845, 76779), (855, 75881), (1235, 52533), (1347, 48165), (1521, 42655), (2223, 29185), (2245, 28899), (2535, 25593), (3211, 20205), (3705, 17511), (4041, 16055), (5837, 11115), (6735, 9633), (7605, 8531)]