21245900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{277}}^1$

素因数の和:363

約数の個数: 72

約数和(自身を含む): 50673840

約数和(自身を除く): 29427940

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 59, 65, 100, 118, 130, 236, 260, 277, 295, 325, 554, 590, 650, 767, 1108, 1180, 1300, 1385, 1475, 1534, 2770, 2950, 3068, 3601, 3835, 5540, 5900, 6925, 7202, 7670, 13850, 14404, 15340, 16343, 18005, 19175, 27700, 32686, 36010, 38350, 65372, 72020, 76700, 81715, 90025, 163430, 180050, 212459, 326860, 360100, 408575, 424918, 817150, 849836, 1062295, 1634300, 2124590, 4249180, 5311475, 10622950, 21245900]

約数ペア:

[(1, 21245900), (2, 10622950), (4, 5311475), (5, 4249180), (10, 2124590), (13, 1634300), (20, 1062295), (25, 849836), (26, 817150), (50, 424918), (52, 408575), (59, 360100), (65, 326860), (100, 212459), (118, 180050), (130, 163430), (236, 90025), (260, 81715), (277, 76700), (295, 72020), (325, 65372), (554, 38350), (590, 36010), (650, 32686), (767, 27700), (1108, 19175), (1180, 18005), (1300, 16343), (1385, 15340), (1475, 14404), (1534, 13850), (2770, 7670), (2950, 7202), (3068, 6925), (3601, 5900), (3835, 5540)]