205979220

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{381443}}^1$

素因数の和:381461

約数の個数: 48

約数和(自身を含む): 640825920

約数和(自身を除く): 434846700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 381443, 762886, 1144329, 1525772, 1907215, 2288658, 3432987, 3814430, 4577316, 5721645, 6865974, 7628860, 10298961, 11443290, 13731948, 17164935, 20597922, 22886580, 34329870, 41195844, 51494805, 68659740, 102989610, 205979220]

約数ペア:

[(1, 205979220), (2, 102989610), (3, 68659740), (4, 51494805), (5, 41195844), (6, 34329870), (9, 22886580), (10, 20597922), (12, 17164935), (15, 13731948), (18, 11443290), (20, 10298961), (27, 7628860), (30, 6865974), (36, 5721645), (45, 4577316), (54, 3814430), (60, 3432987), (90, 2288658), (108, 1907215), (135, 1525772), (180, 1144329), (270, 762886), (540, 381443)]