20476400

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:199

約数の個数: 120

約数和(自身を含む): 57567744

約数和(自身を除く): 37091344

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 70, 71, 80, 100, 103, 112, 140, 142, 175, 200, 206, 280, 284, 350, 355, 400, 412, 497, 515, 560, 568, 700, 710, 721, 824, 994, 1030, 1136, 1400, 1420, 1442, 1648, 1775, 1988, 2060, 2485, 2575, 2800, 2840, 2884, 3550, 3605, 3976, 4120, 4970, 5150, 5680, 5768, 7100, 7210, 7313, 7952, 8240, 9940, 10300, 11536, 12425, 14200, 14420, 14626, 18025, 19880, 20600, 24850, 28400, 28840, 29252, 36050, 36565, 39760, 41200, 49700, 51191, 57680, 58504, 72100, 73130, 99400, 102382, 117008, 144200, 146260, 182825, 198800, 204764, 255955, 288400, 292520, 365650, 409528, 511910, 585040, 731300, 819056, 1023820, 1279775, 1462600, 2047640, 2559550, 2925200, 4095280, 5119100, 10238200, 20476400]

約数ペア:

[(1, 20476400), (2, 10238200), (4, 5119100), (5, 4095280), (7, 2925200), (8, 2559550), (10, 2047640), (14, 1462600), (16, 1279775), (20, 1023820), (25, 819056), (28, 731300), (35, 585040), (40, 511910), (50, 409528), (56, 365650), (70, 292520), (71, 288400), (80, 255955), (100, 204764), (103, 198800), (112, 182825), (140, 146260), (142, 144200), (175, 117008), (200, 102382), (206, 99400), (280, 73130), (284, 72100), (350, 58504), (355, 57680), (400, 51191), (412, 49700), (497, 41200), (515, 39760), (560, 36565), (568, 36050), (700, 29252), (710, 28840), (721, 28400), (824, 24850), (994, 20600), (1030, 19880), (1136, 18025), (1400, 14626), (1420, 14420), (1442, 14200), (1648, 12425), (1775, 11536), (1988, 10300), (2060, 9940), (2485, 8240), (2575, 7952), (2800, 7313), (2840, 7210), (2884, 7100), (3550, 5768), (3605, 5680), (3976, 5150), (4120, 4970)]