20286350

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{389}}^1$

素因数の和:557

約数の個数: 48

約数和(自身を含む): 43524000

約数和(自身を除く): 23237650

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 149, 175, 298, 350, 389, 745, 778, 1043, 1490, 1945, 2086, 2723, 3725, 3890, 5215, 5446, 7450, 9725, 10430, 13615, 19450, 26075, 27230, 52150, 57961, 68075, 115922, 136150, 289805, 405727, 579610, 811454, 1449025, 2028635, 2898050, 4057270, 10143175, 20286350]

約数ペア:

[(1, 20286350), (2, 10143175), (5, 4057270), (7, 2898050), (10, 2028635), (14, 1449025), (25, 811454), (35, 579610), (50, 405727), (70, 289805), (149, 136150), (175, 115922), (298, 68075), (350, 57961), (389, 52150), (745, 27230), (778, 26075), (1043, 19450), (1490, 13615), (1945, 10430), (2086, 9725), (2723, 7450), (3725, 5446), (3890, 5215)]