21980106

素因数分解:

$2^1\times 3^3\times {\mathrm{491}}^1\times {\mathrm{829}}^1$

素因数の和:1331

約数の個数: 32

約数和(自身を含む): 49003200

約数和(自身を除く): 27023094

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 491, 829, 982, 1473, 1658, 2487, 2946, 4419, 4974, 7461, 8838, 13257, 14922, 22383, 26514, 44766, 407039, 814078, 1221117, 2442234, 3663351, 7326702, 10990053, 21980106]

約数ペア:

[(1, 21980106), (2, 10990053), (3, 7326702), (6, 3663351), (9, 2442234), (18, 1221117), (27, 814078), (54, 407039), (491, 44766), (829, 26514), (982, 22383), (1473, 14922), (1658, 13257), (2487, 8838), (2946, 7461), (4419, 4974)]