205328440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:237

約数の個数: 128

約数和(自身を含む): 510681600

約数和(自身を除く): 305353160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 61, 76, 86, 95, 103, 122, 152, 172, 190, 206, 215, 244, 305, 344, 380, 412, 430, 488, 515, 610, 760, 817, 824, 860, 1030, 1159, 1220, 1634, 1720, 1957, 2060, 2318, 2440, 2623, 3268, 3914, 4085, 4120, 4429, 4636, 5246, 5795, 6283, 6536, 7828, 8170, 8858, 9272, 9785, 10492, 11590, 12566, 13115, 15656, 16340, 17716, 19570, 20984, 22145, 23180, 25132, 26230, 31415, 32680, 35432, 39140, 44290, 46360, 49837, 50264, 52460, 62830, 78280, 84151, 88580, 99674, 104920, 119377, 125660, 168302, 177160, 199348, 238754, 249185, 251320, 270169, 336604, 398696, 420755, 477508, 498370, 540338, 596885, 673208, 841510, 955016, 996740, 1080676, 1193770, 1350845, 1683020, 1993480, 2161352, 2387540, 2701690, 3366040, 4775080, 5133211, 5403380, 10266422, 10806760, 20532844, 25666055, 41065688, 51332110, 102664220, 205328440]

約数ペア:

[(1, 205328440), (2, 102664220), (4, 51332110), (5, 41065688), (8, 25666055), (10, 20532844), (19, 10806760), (20, 10266422), (38, 5403380), (40, 5133211), (43, 4775080), (61, 3366040), (76, 2701690), (86, 2387540), (95, 2161352), (103, 1993480), (122, 1683020), (152, 1350845), (172, 1193770), (190, 1080676), (206, 996740), (215, 955016), (244, 841510), (305, 673208), (344, 596885), (380, 540338), (412, 498370), (430, 477508), (488, 420755), (515, 398696), (610, 336604), (760, 270169), (817, 251320), (824, 249185), (860, 238754), (1030, 199348), (1159, 177160), (1220, 168302), (1634, 125660), (1720, 119377), (1957, 104920), (2060, 99674), (2318, 88580), (2440, 84151), (2623, 78280), (3268, 62830), (3914, 52460), (4085, 50264), (4120, 49837), (4429, 46360), (4636, 44290), (5246, 39140), (5795, 35432), (6283, 32680), (6536, 31415), (7828, 26230), (8170, 25132), (8858, 23180), (9272, 22145), (9785, 20984), (10492, 19570), (11590, 17716), (12566, 16340), (13115, 15656)]