19486518980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1\times {\mathrm{115019}}^1$

素因数の和:115268

約数の個数: 48

約数和(自身を含む): 42086278080

約数和(自身を除く): 22599759100

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 197, 215, 394, 430, 788, 860, 985, 1970, 3940, 8471, 16942, 33884, 42355, 84710, 115019, 169420, 230038, 460076, 575095, 1150190, 2300380, 4945817, 9891634, 19783268, 22658743, 24729085, 45317486, 49458170, 90634972, 98916340, 113293715, 226587430, 453174860, 974325949, 1948651898, 3897303796, 4871629745, 9743259490, 19486518980]

約数ペア:

[(1, 19486518980), (2, 9743259490), (4, 4871629745), (5, 3897303796), (10, 1948651898), (20, 974325949), (43, 453174860), (86, 226587430), (172, 113293715), (197, 98916340), (215, 90634972), (394, 49458170), (430, 45317486), (788, 24729085), (860, 22658743), (985, 19783268), (1970, 9891634), (3940, 4945817), (8471, 2300380), (16942, 1150190), (33884, 575095), (42355, 460076), (84710, 230038), (115019, 169420)]