20186870

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:221

約数の個数: 64

約数和(自身を含む): 42301440

約数和(自身を除く): 22114570

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 79, 101, 110, 115, 158, 202, 230, 253, 395, 505, 506, 790, 869, 1010, 1111, 1265, 1738, 1817, 2222, 2323, 2530, 3634, 4345, 4646, 5555, 7979, 8690, 9085, 11110, 11615, 15958, 18170, 19987, 23230, 25553, 39895, 39974, 51106, 79790, 87769, 99935, 127765, 175538, 183517, 199870, 255530, 367034, 438845, 877690, 917585, 1835170, 2018687, 4037374, 10093435, 20186870]

約数ペア:

[(1, 20186870), (2, 10093435), (5, 4037374), (10, 2018687), (11, 1835170), (22, 917585), (23, 877690), (46, 438845), (55, 367034), (79, 255530), (101, 199870), (110, 183517), (115, 175538), (158, 127765), (202, 99935), (230, 87769), (253, 79790), (395, 51106), (505, 39974), (506, 39895), (790, 25553), (869, 23230), (1010, 19987), (1111, 18170), (1265, 15958), (1738, 11615), (1817, 11110), (2222, 9085), (2323, 8690), (2530, 7979), (3634, 5555), (4345, 4646)]