20387538

素因数分解:

$2^1\times 3^4\times {\mathrm{317}}^1\times {\mathrm{397}}^1$

素因数の和:728

約数の個数: 40

約数和(自身を含む): 45942732

約数和(自身を除く): 25555194

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 317, 397, 634, 794, 951, 1191, 1902, 2382, 2853, 3573, 5706, 7146, 8559, 10719, 17118, 21438, 25677, 32157, 51354, 64314, 125849, 251698, 377547, 755094, 1132641, 2265282, 3397923, 6795846, 10193769, 20387538]

約数ペア:

[(1, 20387538), (2, 10193769), (3, 6795846), (6, 3397923), (9, 2265282), (18, 1132641), (27, 755094), (54, 377547), (81, 251698), (162, 125849), (317, 64314), (397, 51354), (634, 32157), (794, 25677), (951, 21438), (1191, 17118), (1902, 10719), (2382, 8559), (2853, 7146), (3573, 5706)]