261478490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{31}}^2$

素因数の和:125

約数の個数: 144

約数和(自身を含む): 628020864

約数和(自身を除く): 366542374

約数列:

[1, 2, 5, 7, 10, 13, 14, 23, 26, 31, 35, 46, 62, 65, 70, 91, 115, 130, 155, 161, 169, 182, 217, 230, 299, 310, 322, 338, 403, 434, 455, 598, 713, 805, 806, 845, 910, 961, 1085, 1183, 1426, 1495, 1610, 1690, 1922, 2015, 2093, 2170, 2366, 2821, 2990, 3565, 3887, 4030, 4186, 4805, 4991, 5239, 5642, 5915, 6727, 7130, 7774, 9269, 9610, 9982, 10465, 10478, 11830, 12493, 13454, 14105, 18538, 19435, 20930, 22103, 24955, 24986, 26195, 27209, 28210, 33635, 36673, 38870, 44206, 46345, 49910, 52390, 54418, 62465, 64883, 67270, 73346, 87451, 92690, 110515, 120497, 124930, 129766, 136045, 154721, 162409, 174902, 183365, 221030, 240994, 272090, 287339, 309442, 324415, 324818, 366730, 437255, 574678, 602485, 648830, 773605, 812045, 843479, 874510, 1136863, 1204970, 1436695, 1547210, 1624090, 1686958, 2011373, 2273726, 2873390, 3735407, 4022746, 4217395, 5684315, 7470814, 8434790, 10056865, 11368630, 18677035, 20113730, 26147849, 37354070, 52295698, 130739245, 261478490]

約数ペア:

[(1, 261478490), (2, 130739245), (5, 52295698), (7, 37354070), (10, 26147849), (13, 20113730), (14, 18677035), (23, 11368630), (26, 10056865), (31, 8434790), (35, 7470814), (46, 5684315), (62, 4217395), (65, 4022746), (70, 3735407), (91, 2873390), (115, 2273726), (130, 2011373), (155, 1686958), (161, 1624090), (169, 1547210), (182, 1436695), (217, 1204970), (230, 1136863), (299, 874510), (310, 843479), (322, 812045), (338, 773605), (403, 648830), (434, 602485), (455, 574678), (598, 437255), (713, 366730), (805, 324818), (806, 324415), (845, 309442), (910, 287339), (961, 272090), (1085, 240994), (1183, 221030), (1426, 183365), (1495, 174902), (1610, 162409), (1690, 154721), (1922, 136045), (2015, 129766), (2093, 124930), (2170, 120497), (2366, 110515), (2821, 92690), (2990, 87451), (3565, 73346), (3887, 67270), (4030, 64883), (4186, 62465), (4805, 54418), (4991, 52390), (5239, 49910), (5642, 46345), (5915, 44206), (6727, 38870), (7130, 36673), (7774, 33635), (9269, 28210), (9610, 27209), (9982, 26195), (10465, 24986), (10478, 24955), (11830, 22103), (12493, 20930), (13454, 19435), (14105, 18538)]