21713640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{449}}^1$

素因数の和:507

約数の個数: 128

約数和(自身を含む): 72576000

約数和(自身を除く): 50862360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 31, 39, 40, 52, 60, 62, 65, 78, 93, 104, 120, 124, 130, 155, 156, 186, 195, 248, 260, 310, 312, 372, 390, 403, 449, 465, 520, 620, 744, 780, 806, 898, 930, 1209, 1240, 1347, 1560, 1612, 1796, 1860, 2015, 2245, 2418, 2694, 3224, 3592, 3720, 4030, 4490, 4836, 5388, 5837, 6045, 6735, 8060, 8980, 9672, 10776, 11674, 12090, 13470, 13919, 16120, 17511, 17960, 23348, 24180, 26940, 27838, 29185, 35022, 41757, 46696, 48360, 53880, 55676, 58370, 69595, 70044, 83514, 87555, 111352, 116740, 139190, 140088, 167028, 175110, 180947, 208785, 233480, 278380, 334056, 350220, 361894, 417570, 542841, 556760, 700440, 723788, 835140, 904735, 1085682, 1447576, 1670280, 1809470, 2171364, 2714205, 3618940, 4342728, 5428410, 7237880, 10856820, 21713640]

約数ペア:

[(1, 21713640), (2, 10856820), (3, 7237880), (4, 5428410), (5, 4342728), (6, 3618940), (8, 2714205), (10, 2171364), (12, 1809470), (13, 1670280), (15, 1447576), (20, 1085682), (24, 904735), (26, 835140), (30, 723788), (31, 700440), (39, 556760), (40, 542841), (52, 417570), (60, 361894), (62, 350220), (65, 334056), (78, 278380), (93, 233480), (104, 208785), (120, 180947), (124, 175110), (130, 167028), (155, 140088), (156, 139190), (186, 116740), (195, 111352), (248, 87555), (260, 83514), (310, 70044), (312, 69595), (372, 58370), (390, 55676), (403, 53880), (449, 48360), (465, 46696), (520, 41757), (620, 35022), (744, 29185), (780, 27838), (806, 26940), (898, 24180), (930, 23348), (1209, 17960), (1240, 17511), (1347, 16120), (1560, 13919), (1612, 13470), (1796, 12090), (1860, 11674), (2015, 10776), (2245, 9672), (2418, 8980), (2694, 8060), (3224, 6735), (3592, 6045), (3720, 5837), (4030, 5388), (4490, 4836)]