19964690

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{1423}}^1$

素因数の和:1514

約数の個数: 32

約数和(自身を含む): 38140416

約数和(自身を除く): 18175726

約数列:

[1, 2, 5, 10, 23, 46, 61, 115, 122, 230, 305, 610, 1403, 1423, 2806, 2846, 7015, 7115, 14030, 14230, 32729, 65458, 86803, 163645, 173606, 327290, 434015, 868030, 1996469, 3992938, 9982345, 19964690]

約数ペア:

[(1, 19964690), (2, 9982345), (5, 3992938), (10, 1996469), (23, 868030), (46, 434015), (61, 327290), (115, 173606), (122, 163645), (230, 86803), (305, 65458), (610, 32729), (1403, 14230), (1423, 14030), (2806, 7115), (2846, 7015)]