19989296

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{211}}^1$

素因数の和:441

約数の個数: 40

約数和(自身を含む): 40378368

約数和(自身を除く): 20389072

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 191, 211, 248, 382, 422, 496, 764, 844, 1528, 1688, 3056, 3376, 5921, 6541, 11842, 13082, 23684, 26164, 40301, 47368, 52328, 80602, 94736, 104656, 161204, 322408, 644816, 1249331, 2498662, 4997324, 9994648, 19989296]

約数ペア:

[(1, 19989296), (2, 9994648), (4, 4997324), (8, 2498662), (16, 1249331), (31, 644816), (62, 322408), (124, 161204), (191, 104656), (211, 94736), (248, 80602), (382, 52328), (422, 47368), (496, 40301), (764, 26164), (844, 23684), (1528, 13082), (1688, 11842), (3056, 6541), (3376, 5921)]