201820040

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{1129}}^1$

素因数の和:1290

約数の個数: 64

約数和(自身を含む): 469854000

約数和(自身を除く): 268033960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 109, 164, 205, 218, 328, 410, 436, 545, 820, 872, 1090, 1129, 1640, 2180, 2258, 4360, 4469, 4516, 5645, 8938, 9032, 11290, 17876, 22345, 22580, 35752, 44690, 45160, 46289, 89380, 92578, 123061, 178760, 185156, 231445, 246122, 370312, 462890, 492244, 615305, 925780, 984488, 1230610, 1851560, 2461220, 4922440, 5045501, 10091002, 20182004, 25227505, 40364008, 50455010, 100910020, 201820040]

約数ペア:

[(1, 201820040), (2, 100910020), (4, 50455010), (5, 40364008), (8, 25227505), (10, 20182004), (20, 10091002), (40, 5045501), (41, 4922440), (82, 2461220), (109, 1851560), (164, 1230610), (205, 984488), (218, 925780), (328, 615305), (410, 492244), (436, 462890), (545, 370312), (820, 246122), (872, 231445), (1090, 185156), (1129, 178760), (1640, 123061), (2180, 92578), (2258, 89380), (4360, 46289), (4469, 45160), (4516, 44690), (5645, 35752), (8938, 22580), (9032, 22345), (11290, 17876)]