18774885

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:174

約数の個数: 48

約数和(自身を含む): 32890752

約数和(自身を除く): 14115867

約数列:

[1, 3, 5, 15, 17, 51, 61, 71, 85, 183, 213, 255, 289, 305, 355, 867, 915, 1037, 1065, 1207, 1445, 3111, 3621, 4331, 4335, 5185, 6035, 12993, 15555, 17629, 18105, 20519, 21655, 52887, 61557, 64965, 73627, 88145, 102595, 220881, 264435, 307785, 368135, 1104405, 1251659, 3754977, 6258295, 18774885]

約数ペア:

[(1, 18774885), (3, 6258295), (5, 3754977), (15, 1251659), (17, 1104405), (51, 368135), (61, 307785), (71, 264435), (85, 220881), (183, 102595), (213, 88145), (255, 73627), (289, 64965), (305, 61557), (355, 52887), (867, 21655), (915, 20519), (1037, 18105), (1065, 17629), (1207, 15555), (1445, 12993), (3111, 6035), (3621, 5185), (4331, 4335)]