280915180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{383}}^1$

素因数の和:456

約数の個数: 144

約数和(自身を含む): 755564544

約数和(自身を除く): 474649364

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 31, 35, 52, 62, 65, 70, 91, 124, 130, 140, 155, 169, 182, 217, 260, 310, 338, 364, 383, 403, 434, 455, 620, 676, 766, 806, 845, 868, 910, 1085, 1183, 1532, 1612, 1690, 1820, 1915, 2015, 2170, 2366, 2681, 2821, 3380, 3830, 4030, 4340, 4732, 4979, 5239, 5362, 5642, 5915, 7660, 8060, 9958, 10478, 10724, 11284, 11830, 11873, 13405, 14105, 19916, 20956, 23660, 23746, 24895, 26195, 26810, 28210, 34853, 36673, 47492, 49790, 52390, 53620, 56420, 59365, 64727, 69706, 73346, 83111, 99580, 104780, 118730, 129454, 139412, 146692, 154349, 166222, 174265, 183365, 237460, 258908, 308698, 323635, 332444, 348530, 366730, 415555, 453089, 617396, 647270, 697060, 733460, 771745, 831110, 906178, 1080443, 1294540, 1543490, 1662220, 1812356, 2006537, 2160886, 2265445, 3086980, 4013074, 4321772, 4530890, 5402215, 8026148, 9061780, 10032685, 10804430, 14045759, 20065370, 21608860, 28091518, 40130740, 56183036, 70228795, 140457590, 280915180]

約数ペア:

[(1, 280915180), (2, 140457590), (4, 70228795), (5, 56183036), (7, 40130740), (10, 28091518), (13, 21608860), (14, 20065370), (20, 14045759), (26, 10804430), (28, 10032685), (31, 9061780), (35, 8026148), (52, 5402215), (62, 4530890), (65, 4321772), (70, 4013074), (91, 3086980), (124, 2265445), (130, 2160886), (140, 2006537), (155, 1812356), (169, 1662220), (182, 1543490), (217, 1294540), (260, 1080443), (310, 906178), (338, 831110), (364, 771745), (383, 733460), (403, 697060), (434, 647270), (455, 617396), (620, 453089), (676, 415555), (766, 366730), (806, 348530), (845, 332444), (868, 323635), (910, 308698), (1085, 258908), (1183, 237460), (1532, 183365), (1612, 174265), (1690, 166222), (1820, 154349), (1915, 146692), (2015, 139412), (2170, 129454), (2366, 118730), (2681, 104780), (2821, 99580), (3380, 83111), (3830, 73346), (4030, 69706), (4340, 64727), (4732, 59365), (4979, 56420), (5239, 53620), (5362, 52390), (5642, 49790), (5915, 47492), (7660, 36673), (8060, 34853), (9958, 28210), (10478, 26810), (10724, 26195), (11284, 24895), (11830, 23746), (11873, 23660), (13405, 20956), (14105, 19916)]