18886860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{331}}^1$

素因数の和:663

約数の個数: 72

約数和(自身を含む): 57644496

約数和(自身を除く): 38757636

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 317, 331, 634, 662, 951, 993, 1268, 1324, 1585, 1655, 1902, 1986, 2853, 2979, 3170, 3310, 3804, 3972, 4755, 4965, 5706, 5958, 6340, 6620, 9510, 9930, 11412, 11916, 14265, 14895, 19020, 19860, 28530, 29790, 57060, 59580, 104927, 209854, 314781, 419708, 524635, 629562, 944343, 1049270, 1259124, 1573905, 1888686, 2098540, 3147810, 3777372, 4721715, 6295620, 9443430, 18886860]

約数ペア:

[(1, 18886860), (2, 9443430), (3, 6295620), (4, 4721715), (5, 3777372), (6, 3147810), (9, 2098540), (10, 1888686), (12, 1573905), (15, 1259124), (18, 1049270), (20, 944343), (30, 629562), (36, 524635), (45, 419708), (60, 314781), (90, 209854), (180, 104927), (317, 59580), (331, 57060), (634, 29790), (662, 28530), (951, 19860), (993, 19020), (1268, 14895), (1324, 14265), (1585, 11916), (1655, 11412), (1902, 9930), (1986, 9510), (2853, 6620), (2979, 6340), (3170, 5958), (3310, 5706), (3804, 4965), (3972, 4755)]