20902882

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1$

素因数の和:283

約数の個数: 64

約数和(自身を含む): 43110144

約数和(自身を除く): 22207262

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 53, 77, 91, 106, 143, 154, 182, 197, 286, 371, 394, 583, 689, 742, 1001, 1166, 1378, 1379, 2002, 2167, 2561, 2758, 4081, 4334, 4823, 5122, 7579, 8162, 9646, 10441, 15158, 15169, 17927, 20882, 28171, 30338, 35854, 53053, 56342, 73087, 106106, 114851, 135733, 146174, 197197, 229702, 271466, 394394, 803957, 950131, 1493063, 1607914, 1900262, 2986126, 10451441, 20902882]

約数ペア:

[(1, 20902882), (2, 10451441), (7, 2986126), (11, 1900262), (13, 1607914), (14, 1493063), (22, 950131), (26, 803957), (53, 394394), (77, 271466), (91, 229702), (106, 197197), (143, 146174), (154, 135733), (182, 114851), (197, 106106), (286, 73087), (371, 56342), (394, 53053), (583, 35854), (689, 30338), (742, 28171), (1001, 20882), (1166, 17927), (1378, 15169), (1379, 15158), (2002, 10441), (2167, 9646), (2561, 8162), (2758, 7579), (4081, 5122), (4334, 4823)]