20728103640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{409}}^1\times {\mathrm{2591}}^1$

素因数の和:3177

約数の個数: 128

約数和(自身を含む): 62742988800

約数和(自身を除く): 42014885160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 163, 326, 409, 489, 652, 815, 818, 978, 1227, 1304, 1630, 1636, 1956, 2045, 2445, 2454, 2591, 3260, 3272, 3912, 4090, 4890, 4908, 5182, 6135, 6520, 7773, 8180, 9780, 9816, 10364, 12270, 12955, 15546, 16360, 19560, 20728, 24540, 25910, 31092, 38865, 49080, 51820, 62184, 66667, 77730, 103640, 133334, 155460, 200001, 266668, 310920, 333335, 400002, 422333, 533336, 666670, 800004, 844666, 1000005, 1059719, 1266999, 1333340, 1600008, 1689332, 2000010, 2111665, 2119438, 2533998, 2666680, 3179157, 3378664, 4000020, 4223330, 4238876, 5067996, 5298595, 6334995, 6358314, 8000040, 8446660, 8477752, 10135992, 10597190, 12669990, 12716628, 15895785, 16893320, 21194380, 25339980, 25433256, 31791570, 42388760, 50679960, 63583140, 127166280, 172734197, 345468394, 518202591, 690936788, 863670985, 1036405182, 1381873576, 1727341970, 2072810364, 2591012955, 3454683940, 4145620728, 5182025910, 6909367880, 10364051820, 20728103640]

約数ペア:

[(1, 20728103640), (2, 10364051820), (3, 6909367880), (4, 5182025910), (5, 4145620728), (6, 3454683940), (8, 2591012955), (10, 2072810364), (12, 1727341970), (15, 1381873576), (20, 1036405182), (24, 863670985), (30, 690936788), (40, 518202591), (60, 345468394), (120, 172734197), (163, 127166280), (326, 63583140), (409, 50679960), (489, 42388760), (652, 31791570), (815, 25433256), (818, 25339980), (978, 21194380), (1227, 16893320), (1304, 15895785), (1630, 12716628), (1636, 12669990), (1956, 10597190), (2045, 10135992), (2445, 8477752), (2454, 8446660), (2591, 8000040), (3260, 6358314), (3272, 6334995), (3912, 5298595), (4090, 5067996), (4890, 4238876), (4908, 4223330), (5182, 4000020), (6135, 3378664), (6520, 3179157), (7773, 2666680), (8180, 2533998), (9780, 2119438), (9816, 2111665), (10364, 2000010), (12270, 1689332), (12955, 1600008), (15546, 1333340), (16360, 1266999), (19560, 1059719), (20728, 1000005), (24540, 844666), (25910, 800004), (31092, 666670), (38865, 533336), (49080, 422333), (51820, 400002), (62184, 333335), (66667, 310920), (77730, 266668), (103640, 200001), (133334, 155460)]