19516860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{9857}}^1$

素因数の和:9883

約数の個数: 72

約数和(自身を含む): 64589616

約数和(自身を除く): 45072756

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 9857, 19714, 29571, 39428, 49285, 59142, 88713, 98570, 108427, 118284, 147855, 177426, 197140, 216854, 295710, 325281, 354852, 433708, 443565, 542135, 591420, 650562, 887130, 975843, 1084270, 1301124, 1626405, 1774260, 1951686, 2168540, 3252810, 3903372, 4879215, 6505620, 9758430, 19516860]

約数ペア:

[(1, 19516860), (2, 9758430), (3, 6505620), (4, 4879215), (5, 3903372), (6, 3252810), (9, 2168540), (10, 1951686), (11, 1774260), (12, 1626405), (15, 1301124), (18, 1084270), (20, 975843), (22, 887130), (30, 650562), (33, 591420), (36, 542135), (44, 443565), (45, 433708), (55, 354852), (60, 325281), (66, 295710), (90, 216854), (99, 197140), (110, 177426), (132, 147855), (165, 118284), (180, 108427), (198, 98570), (220, 88713), (330, 59142), (396, 49285), (495, 39428), (660, 29571), (990, 19714), (1980, 9857)]