20515376

素因数分解:

$2^4\times 7^1\times {\mathrm{113}}^1\times {\mathrm{1621}}^1$

素因数の和:1749

約数の個数: 40

約数和(自身を含む): 45857184

約数和(自身を除く): 25341808

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 113, 226, 452, 791, 904, 1582, 1621, 1808, 3164, 3242, 6328, 6484, 11347, 12656, 12968, 22694, 25936, 45388, 90776, 181552, 183173, 366346, 732692, 1282211, 1465384, 2564422, 2930768, 5128844, 10257688, 20515376]

約数ペア:

[(1, 20515376), (2, 10257688), (4, 5128844), (7, 2930768), (8, 2564422), (14, 1465384), (16, 1282211), (28, 732692), (56, 366346), (112, 183173), (113, 181552), (226, 90776), (452, 45388), (791, 25936), (904, 22694), (1582, 12968), (1621, 12656), (1808, 11347), (3164, 6484), (3242, 6328)]