21652850

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1$

素因数の和:287

約数の個数: 48

約数和(自身を含む): 42352200

約数和(自身を除く): 20699350

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 109, 137, 145, 218, 274, 290, 545, 685, 725, 1090, 1370, 1450, 2725, 3161, 3425, 3973, 5450, 6322, 6850, 7946, 14933, 15805, 19865, 29866, 31610, 39730, 74665, 79025, 99325, 149330, 158050, 198650, 373325, 433057, 746650, 866114, 2165285, 4330570, 10826425, 21652850]

約数ペア:

[(1, 21652850), (2, 10826425), (5, 4330570), (10, 2165285), (25, 866114), (29, 746650), (50, 433057), (58, 373325), (109, 198650), (137, 158050), (145, 149330), (218, 99325), (274, 79025), (290, 74665), (545, 39730), (685, 31610), (725, 29866), (1090, 19865), (1370, 15805), (1450, 14933), (2725, 7946), (3161, 6850), (3425, 6322), (3973, 5450)]