205800980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1123}}^1$

素因数の和:1174

約数の個数: 144

約数和(自身を含む): 581224896

約数和(自身を除く): 375423916

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 17, 20, 22, 28, 34, 35, 44, 49, 55, 68, 70, 77, 85, 98, 110, 119, 140, 154, 170, 187, 196, 220, 238, 245, 308, 340, 374, 385, 476, 490, 539, 595, 748, 770, 833, 935, 980, 1078, 1123, 1190, 1309, 1540, 1666, 1870, 2156, 2246, 2380, 2618, 2695, 3332, 3740, 4165, 4492, 5236, 5390, 5615, 6545, 7861, 8330, 9163, 10780, 11230, 12353, 13090, 15722, 16660, 18326, 19091, 22460, 24706, 26180, 31444, 36652, 38182, 39305, 45815, 49412, 55027, 61765, 76364, 78610, 86471, 91630, 95455, 110054, 123530, 133637, 157220, 172942, 183260, 190910, 210001, 220108, 247060, 267274, 275135, 345884, 381820, 420002, 432355, 534548, 550270, 605297, 668185, 840004, 864710, 935459, 1050005, 1100540, 1210594, 1336370, 1470007, 1729420, 1870918, 2100010, 2421188, 2672740, 2940014, 3026485, 3741836, 4200020, 4677295, 5880028, 6052970, 7350035, 9354590, 10290049, 12105940, 14700070, 18709180, 20580098, 29400140, 41160196, 51450245, 102900490, 205800980]

約数ペア:

[(1, 205800980), (2, 102900490), (4, 51450245), (5, 41160196), (7, 29400140), (10, 20580098), (11, 18709180), (14, 14700070), (17, 12105940), (20, 10290049), (22, 9354590), (28, 7350035), (34, 6052970), (35, 5880028), (44, 4677295), (49, 4200020), (55, 3741836), (68, 3026485), (70, 2940014), (77, 2672740), (85, 2421188), (98, 2100010), (110, 1870918), (119, 1729420), (140, 1470007), (154, 1336370), (170, 1210594), (187, 1100540), (196, 1050005), (220, 935459), (238, 864710), (245, 840004), (308, 668185), (340, 605297), (374, 550270), (385, 534548), (476, 432355), (490, 420002), (539, 381820), (595, 345884), (748, 275135), (770, 267274), (833, 247060), (935, 220108), (980, 210001), (1078, 190910), (1123, 183260), (1190, 172942), (1309, 157220), (1540, 133637), (1666, 123530), (1870, 110054), (2156, 95455), (2246, 91630), (2380, 86471), (2618, 78610), (2695, 76364), (3332, 61765), (3740, 55027), (4165, 49412), (4492, 45815), (5236, 39305), (5390, 38182), (5615, 36652), (6545, 31444), (7861, 26180), (8330, 24706), (9163, 22460), (10780, 19091), (11230, 18326), (12353, 16660), (13090, 15722)]