217521375

素因数分解:

$3^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{229}}^1$

素因数の和:413

約数の個数: 64

約数和(自身を含む): 387504000

約数和(自身を除く): 169982625

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 125, 149, 229, 255, 375, 425, 447, 687, 745, 1145, 1275, 2125, 2235, 2533, 3435, 3725, 3893, 5725, 6375, 7599, 11175, 11679, 12665, 17175, 18625, 19465, 28625, 34121, 37995, 55875, 58395, 63325, 85875, 97325, 102363, 170605, 189975, 291975, 316625, 486625, 511815, 580057, 853025, 949875, 1459875, 1740171, 2559075, 2900285, 4265125, 8700855, 12795375, 14501425, 43504275, 72507125, 217521375]

約数ペア:

[(1, 217521375), (3, 72507125), (5, 43504275), (15, 14501425), (17, 12795375), (25, 8700855), (51, 4265125), (75, 2900285), (85, 2559075), (125, 1740171), (149, 1459875), (229, 949875), (255, 853025), (375, 580057), (425, 511815), (447, 486625), (687, 316625), (745, 291975), (1145, 189975), (1275, 170605), (2125, 102363), (2235, 97325), (2533, 85875), (3435, 63325), (3725, 58395), (3893, 55875), (5725, 37995), (6375, 34121), (7599, 28625), (11175, 19465), (11679, 18625), (12665, 17175)]