238410020

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{191}}^1\times {\mathrm{449}}^1$

素因数の和:788

約数の個数: 48

約数和(自身を含む): 508032000

約数和(自身を除く): 269621980

約数列:

[1, 2, 4, 5, 10, 20, 139, 191, 278, 382, 449, 556, 695, 764, 898, 955, 1390, 1796, 1910, 2245, 2780, 3820, 4490, 8980, 26549, 53098, 62411, 85759, 106196, 124822, 132745, 171518, 249644, 265490, 312055, 343036, 428795, 530980, 624110, 857590, 1248220, 1715180, 11920501, 23841002, 47682004, 59602505, 119205010, 238410020]

約数ペア:

[(1, 238410020), (2, 119205010), (4, 59602505), (5, 47682004), (10, 23841002), (20, 11920501), (139, 1715180), (191, 1248220), (278, 857590), (382, 624110), (449, 530980), (556, 428795), (695, 343036), (764, 312055), (898, 265490), (955, 249644), (1390, 171518), (1796, 132745), (1910, 124822), (2245, 106196), (2780, 85759), (3820, 62411), (4490, 53098), (8980, 26549)]