20951854

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{151}}^1$

素因数の和:241

約数の個数: 64

約数和(自身を含む): 42550272

約数和(自身を除く): 21598418

約数列:

[1, 2, 7, 11, 14, 17, 22, 34, 53, 77, 106, 119, 151, 154, 187, 238, 302, 371, 374, 583, 742, 901, 1057, 1166, 1309, 1661, 1802, 2114, 2567, 2618, 3322, 4081, 5134, 6307, 8003, 8162, 9911, 11627, 12614, 16006, 17969, 19822, 23254, 28237, 35938, 56021, 56474, 69377, 88033, 112042, 136051, 138754, 176066, 197659, 272102, 395318, 616231, 952357, 1232462, 1496561, 1904714, 2993122, 10475927, 20951854]

約数ペア:

[(1, 20951854), (2, 10475927), (7, 2993122), (11, 1904714), (14, 1496561), (17, 1232462), (22, 952357), (34, 616231), (53, 395318), (77, 272102), (106, 197659), (119, 176066), (151, 138754), (154, 136051), (187, 112042), (238, 88033), (302, 69377), (371, 56474), (374, 56021), (583, 35938), (742, 28237), (901, 23254), (1057, 19822), (1166, 17969), (1309, 16006), (1661, 12614), (1802, 11627), (2114, 9911), (2567, 8162), (2618, 8003), (3322, 6307), (4081, 5134)]