20534800

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{359}}^1$

素因数の和:401

約数の個数: 120

約数和(自身を含む): 58121280

約数和(自身を除く): 37586480

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 25, 26, 40, 44, 50, 52, 55, 65, 80, 88, 100, 104, 110, 130, 143, 176, 200, 208, 220, 260, 275, 286, 325, 359, 400, 440, 520, 550, 572, 650, 715, 718, 880, 1040, 1100, 1144, 1300, 1430, 1436, 1795, 2200, 2288, 2600, 2860, 2872, 3575, 3590, 3949, 4400, 4667, 5200, 5720, 5744, 7150, 7180, 7898, 8975, 9334, 11440, 14300, 14360, 15796, 17950, 18668, 19745, 23335, 28600, 28720, 31592, 35900, 37336, 39490, 46670, 51337, 57200, 63184, 71800, 74672, 78980, 93340, 98725, 102674, 116675, 143600, 157960, 186680, 197450, 205348, 233350, 256685, 315920, 373360, 394900, 410696, 466700, 513370, 789800, 821392, 933400, 1026740, 1283425, 1579600, 1866800, 2053480, 2566850, 4106960, 5133700, 10267400, 20534800]

約数ペア:

[(1, 20534800), (2, 10267400), (4, 5133700), (5, 4106960), (8, 2566850), (10, 2053480), (11, 1866800), (13, 1579600), (16, 1283425), (20, 1026740), (22, 933400), (25, 821392), (26, 789800), (40, 513370), (44, 466700), (50, 410696), (52, 394900), (55, 373360), (65, 315920), (80, 256685), (88, 233350), (100, 205348), (104, 197450), (110, 186680), (130, 157960), (143, 143600), (176, 116675), (200, 102674), (208, 98725), (220, 93340), (260, 78980), (275, 74672), (286, 71800), (325, 63184), (359, 57200), (400, 51337), (440, 46670), (520, 39490), (550, 37336), (572, 35900), (650, 31592), (715, 28720), (718, 28600), (880, 23335), (1040, 19745), (1100, 18668), (1144, 17950), (1300, 15796), (1430, 14360), (1436, 14300), (1795, 11440), (2200, 9334), (2288, 8975), (2600, 7898), (2860, 7180), (2872, 7150), (3575, 5744), (3590, 5720), (3949, 5200), (4400, 4667)]