20104840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{1217}}^1$

素因数の和:1294

約数の個数: 64

約数和(自身を含む): 52617600

約数和(自身を除く): 32512760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 59, 70, 118, 140, 236, 280, 295, 413, 472, 590, 826, 1180, 1217, 1652, 2065, 2360, 2434, 3304, 4130, 4868, 6085, 8260, 8519, 9736, 12170, 16520, 17038, 24340, 34076, 42595, 48680, 68152, 71803, 85190, 143606, 170380, 287212, 340760, 359015, 502621, 574424, 718030, 1005242, 1436060, 2010484, 2513105, 2872120, 4020968, 5026210, 10052420, 20104840]

約数ペア:

[(1, 20104840), (2, 10052420), (4, 5026210), (5, 4020968), (7, 2872120), (8, 2513105), (10, 2010484), (14, 1436060), (20, 1005242), (28, 718030), (35, 574424), (40, 502621), (56, 359015), (59, 340760), (70, 287212), (118, 170380), (140, 143606), (236, 85190), (280, 71803), (295, 68152), (413, 48680), (472, 42595), (590, 34076), (826, 24340), (1180, 17038), (1217, 16520), (1652, 12170), (2065, 9736), (2360, 8519), (2434, 8260), (3304, 6085), (4130, 4868)]