21396700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{151}}^1$

素因数の和:287

約数の個数: 72

約数和(自身を含む): 50795360

約数和(自身を除く): 29398660

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 109, 130, 151, 218, 260, 302, 325, 436, 545, 604, 650, 755, 1090, 1300, 1417, 1510, 1963, 2180, 2725, 2834, 3020, 3775, 3926, 5450, 5668, 7085, 7550, 7852, 9815, 10900, 14170, 15100, 16459, 19630, 28340, 32918, 35425, 39260, 49075, 65836, 70850, 82295, 98150, 141700, 164590, 196300, 213967, 329180, 411475, 427934, 822950, 855868, 1069835, 1645900, 2139670, 4279340, 5349175, 10698350, 21396700]

約数ペア:

[(1, 21396700), (2, 10698350), (4, 5349175), (5, 4279340), (10, 2139670), (13, 1645900), (20, 1069835), (25, 855868), (26, 822950), (50, 427934), (52, 411475), (65, 329180), (100, 213967), (109, 196300), (130, 164590), (151, 141700), (218, 98150), (260, 82295), (302, 70850), (325, 65836), (436, 49075), (545, 39260), (604, 35425), (650, 32918), (755, 28340), (1090, 19630), (1300, 16459), (1417, 15100), (1510, 14170), (1963, 10900), (2180, 9815), (2725, 7852), (2834, 7550), (3020, 7085), (3775, 5668), (3926, 5450)]