18128944

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{439}}^1$

素因数の和:565

約数の個数: 40

約数和(自身を含む): 36828000

約数和(自身を除く): 18699056

約数列:

[1, 2, 4, 8, 16, 29, 58, 89, 116, 178, 232, 356, 439, 464, 712, 878, 1424, 1756, 2581, 3512, 5162, 7024, 10324, 12731, 20648, 25462, 39071, 41296, 50924, 78142, 101848, 156284, 203696, 312568, 625136, 1133059, 2266118, 4532236, 9064472, 18128944]

約数ペア:

[(1, 18128944), (2, 9064472), (4, 4532236), (8, 2266118), (16, 1133059), (29, 625136), (58, 312568), (89, 203696), (116, 156284), (178, 101848), (232, 78142), (356, 50924), (439, 41296), (464, 39071), (712, 25462), (878, 20648), (1424, 12731), (1756, 10324), (2581, 7024), (3512, 5162)]