20728278

素因数分解:

$2^1\times 3^3\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{227}}^1$

素因数の和:346

約数の個数: 64

約数和(自身を含む): 49248000

約数和(自身を除く): 28519722

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 89, 114, 171, 178, 227, 267, 342, 454, 513, 534, 681, 801, 1026, 1362, 1602, 1691, 2043, 2403, 3382, 4086, 4313, 4806, 5073, 6129, 8626, 10146, 12258, 12939, 15219, 20203, 25878, 30438, 38817, 40406, 45657, 60609, 77634, 91314, 116451, 121218, 181827, 232902, 363654, 383857, 545481, 767714, 1090962, 1151571, 2303142, 3454713, 6909426, 10364139, 20728278]

約数ペア:

[(1, 20728278), (2, 10364139), (3, 6909426), (6, 3454713), (9, 2303142), (18, 1151571), (19, 1090962), (27, 767714), (38, 545481), (54, 383857), (57, 363654), (89, 232902), (114, 181827), (171, 121218), (178, 116451), (227, 91314), (267, 77634), (342, 60609), (454, 45657), (513, 40406), (534, 38817), (681, 30438), (801, 25878), (1026, 20203), (1362, 15219), (1602, 12939), (1691, 12258), (2043, 10146), (2403, 8626), (3382, 6129), (4086, 5073), (4313, 4806)]