20548170

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{229}}^1\times {\mathrm{997}}^1$

素因数の和:1239

約数の個数: 48

約数和(自身を含む): 53712360

約数和(自身を除く): 33164190

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 229, 458, 687, 997, 1145, 1374, 1994, 2061, 2290, 2991, 3435, 4122, 4985, 5982, 6870, 8973, 9970, 10305, 14955, 17946, 20610, 29910, 44865, 89730, 228313, 456626, 684939, 1141565, 1369878, 2054817, 2283130, 3424695, 4109634, 6849390, 10274085, 20548170]

約数ペア:

[(1, 20548170), (2, 10274085), (3, 6849390), (5, 4109634), (6, 3424695), (9, 2283130), (10, 2054817), (15, 1369878), (18, 1141565), (30, 684939), (45, 456626), (90, 228313), (229, 89730), (458, 44865), (687, 29910), (997, 20610), (1145, 17946), (1374, 14955), (1994, 10305), (2061, 9970), (2290, 8973), (2991, 6870), (3435, 5982), (4122, 4985)]