18750585

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{263}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 35392896

約数和(自身を除く): 16642311

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 97, 105, 147, 245, 263, 291, 485, 679, 735, 789, 1315, 1455, 1841, 2037, 3395, 3945, 4753, 5523, 9205, 10185, 12887, 14259, 23765, 25511, 27615, 38661, 64435, 71295, 76533, 127555, 178577, 193305, 382665, 535731, 892885, 1250039, 2678655, 3750117, 6250195, 18750585]

約数ペア:

[(1, 18750585), (3, 6250195), (5, 3750117), (7, 2678655), (15, 1250039), (21, 892885), (35, 535731), (49, 382665), (97, 193305), (105, 178577), (147, 127555), (245, 76533), (263, 71295), (291, 64435), (485, 38661), (679, 27615), (735, 25511), (789, 23765), (1315, 14259), (1455, 12887), (1841, 10185), (2037, 9205), (3395, 5523), (3945, 4753)]