21645200

素因数分解:

$2^4\times 5^2\times {\mathrm{53}}^1\times {\mathrm{1021}}^1$

素因数の和:1092

約数の個数: 60

約数和(自身を含む): 53035668

約数和(自身を除く): 31390468

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 53, 80, 100, 106, 200, 212, 265, 400, 424, 530, 848, 1021, 1060, 1325, 2042, 2120, 2650, 4084, 4240, 5105, 5300, 8168, 10210, 10600, 16336, 20420, 21200, 25525, 40840, 51050, 54113, 81680, 102100, 108226, 204200, 216452, 270565, 408400, 432904, 541130, 865808, 1082260, 1352825, 2164520, 2705650, 4329040, 5411300, 10822600, 21645200]

約数ペア:

[(1, 21645200), (2, 10822600), (4, 5411300), (5, 4329040), (8, 2705650), (10, 2164520), (16, 1352825), (20, 1082260), (25, 865808), (40, 541130), (50, 432904), (53, 408400), (80, 270565), (100, 216452), (106, 204200), (200, 108226), (212, 102100), (265, 81680), (400, 54113), (424, 51050), (530, 40840), (848, 25525), (1021, 21200), (1060, 20420), (1325, 16336), (2042, 10600), (2120, 10210), (2650, 8168), (4084, 5300), (4240, 5105)]