216911305

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{179}}^1\times {\mathrm{181}}^1$

素因数の和:481

約数の個数: 32

約数和(自身を含む): 286191360

約数和(自身を除く): 69280055

約数列:

[1, 5, 13, 65, 103, 179, 181, 515, 895, 905, 1339, 2327, 2353, 6695, 11635, 11765, 18437, 18643, 32399, 92185, 93215, 161995, 239681, 242359, 421187, 1198405, 1211795, 2105935, 3337097, 16685485, 43382261, 216911305]

約数ペア:

[(1, 216911305), (5, 43382261), (13, 16685485), (65, 3337097), (103, 2105935), (179, 1211795), (181, 1198405), (515, 421187), (895, 242359), (905, 239681), (1339, 161995), (2327, 93215), (2353, 92185), (6695, 32399), (11635, 18643), (11765, 18437)]