21023360

素因数分解:

$2^7\times 5^1\times {\mathrm{107}}^1\times {\mathrm{307}}^1$

素因数の和:433

約数の個数: 64

約数和(自身を含む): 50893920

約数和(自身を除く): 29870560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 107, 128, 160, 214, 307, 320, 428, 535, 614, 640, 856, 1070, 1228, 1535, 1712, 2140, 2456, 3070, 3424, 4280, 4912, 6140, 6848, 8560, 9824, 12280, 13696, 17120, 19648, 24560, 32849, 34240, 39296, 49120, 65698, 68480, 98240, 131396, 164245, 196480, 262792, 328490, 525584, 656980, 1051168, 1313960, 2102336, 2627920, 4204672, 5255840, 10511680, 21023360]

約数ペア:

[(1, 21023360), (2, 10511680), (4, 5255840), (5, 4204672), (8, 2627920), (10, 2102336), (16, 1313960), (20, 1051168), (32, 656980), (40, 525584), (64, 328490), (80, 262792), (107, 196480), (128, 164245), (160, 131396), (214, 98240), (307, 68480), (320, 65698), (428, 49120), (535, 39296), (614, 34240), (640, 32849), (856, 24560), (1070, 19648), (1228, 17120), (1535, 13696), (1712, 12280), (2140, 9824), (2456, 8560), (3070, 6848), (3424, 6140), (4280, 4912)]