31231240

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{409}}^1$

素因数の和:526

約数の個数: 64

約数和(自身を含む): 74390400

約数和(自身を除く): 43159160

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 83, 92, 115, 166, 184, 230, 332, 409, 415, 460, 664, 818, 830, 920, 1636, 1660, 1909, 2045, 3272, 3320, 3818, 4090, 7636, 8180, 9407, 9545, 15272, 16360, 18814, 19090, 33947, 37628, 38180, 47035, 67894, 75256, 76360, 94070, 135788, 169735, 188140, 271576, 339470, 376280, 678940, 780781, 1357880, 1561562, 3123124, 3903905, 6246248, 7807810, 15615620, 31231240]

約数ペア:

[(1, 31231240), (2, 15615620), (4, 7807810), (5, 6246248), (8, 3903905), (10, 3123124), (20, 1561562), (23, 1357880), (40, 780781), (46, 678940), (83, 376280), (92, 339470), (115, 271576), (166, 188140), (184, 169735), (230, 135788), (332, 94070), (409, 76360), (415, 75256), (460, 67894), (664, 47035), (818, 38180), (830, 37628), (920, 33947), (1636, 19090), (1660, 18814), (1909, 16360), (2045, 15272), (3272, 9545), (3320, 9407), (3818, 8180), (4090, 7636)]