28809340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{389}}^1$

素因数の和:451

約数の個数: 72

約数和(自身を含む): 72465120

約数和(自身を除く): 43655780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 389, 460, 529, 644, 778, 805, 1058, 1556, 1610, 1945, 2116, 2645, 2723, 3220, 3703, 3890, 5290, 5446, 7406, 7780, 8947, 10580, 10892, 13615, 14812, 17894, 18515, 27230, 35788, 37030, 44735, 54460, 62629, 74060, 89470, 125258, 178940, 205781, 250516, 313145, 411562, 626290, 823124, 1028905, 1252580, 1440467, 2057810, 2880934, 4115620, 5761868, 7202335, 14404670, 28809340]

約数ペア:

[(1, 28809340), (2, 14404670), (4, 7202335), (5, 5761868), (7, 4115620), (10, 2880934), (14, 2057810), (20, 1440467), (23, 1252580), (28, 1028905), (35, 823124), (46, 626290), (70, 411562), (92, 313145), (115, 250516), (140, 205781), (161, 178940), (230, 125258), (322, 89470), (389, 74060), (460, 62629), (529, 54460), (644, 44735), (778, 37030), (805, 35788), (1058, 27230), (1556, 18515), (1610, 17894), (1945, 14812), (2116, 13615), (2645, 10892), (2723, 10580), (3220, 8947), (3703, 7780), (3890, 7406), (5290, 5446)]