21993296

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2459}}^1$

素因数の和:2523

約数の個数: 40

約数和(自身を含む): 46976160

約数和(自身を除く): 24982864

約数列:

[1, 2, 4, 8, 13, 16, 26, 43, 52, 86, 104, 172, 208, 344, 559, 688, 1118, 2236, 2459, 4472, 4918, 8944, 9836, 19672, 31967, 39344, 63934, 105737, 127868, 211474, 255736, 422948, 511472, 845896, 1374581, 1691792, 2749162, 5498324, 10996648, 21993296]

約数ペア:

[(1, 21993296), (2, 10996648), (4, 5498324), (8, 2749162), (13, 1691792), (16, 1374581), (26, 845896), (43, 511472), (52, 422948), (86, 255736), (104, 211474), (172, 127868), (208, 105737), (344, 63934), (559, 39344), (688, 31967), (1118, 19672), (2236, 9836), (2459, 8944), (4472, 4918)]