20364800

素因数分解:

$2^9\times 5^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:108

約数の個数: 120

約数和(自身を含む): 53024136

約数和(自身を除く): 32659336

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 37, 40, 43, 50, 64, 74, 80, 86, 100, 128, 148, 160, 172, 185, 200, 215, 256, 296, 320, 344, 370, 400, 430, 512, 592, 640, 688, 740, 800, 860, 925, 1075, 1184, 1280, 1376, 1480, 1591, 1600, 1720, 1850, 2150, 2368, 2560, 2752, 2960, 3182, 3200, 3440, 3700, 4300, 4736, 5504, 5920, 6364, 6400, 6880, 7400, 7955, 8600, 9472, 11008, 11840, 12728, 12800, 13760, 14800, 15910, 17200, 18944, 22016, 23680, 25456, 27520, 29600, 31820, 34400, 39775, 47360, 50912, 55040, 59200, 63640, 68800, 79550, 94720, 101824, 110080, 118400, 127280, 137600, 159100, 203648, 236800, 254560, 275200, 318200, 407296, 473600, 509120, 550400, 636400, 814592, 1018240, 1272800, 2036480, 2545600, 4072960, 5091200, 10182400, 20364800]

約数ペア:

[(1, 20364800), (2, 10182400), (4, 5091200), (5, 4072960), (8, 2545600), (10, 2036480), (16, 1272800), (20, 1018240), (25, 814592), (32, 636400), (37, 550400), (40, 509120), (43, 473600), (50, 407296), (64, 318200), (74, 275200), (80, 254560), (86, 236800), (100, 203648), (128, 159100), (148, 137600), (160, 127280), (172, 118400), (185, 110080), (200, 101824), (215, 94720), (256, 79550), (296, 68800), (320, 63640), (344, 59200), (370, 55040), (400, 50912), (430, 47360), (512, 39775), (592, 34400), (640, 31820), (688, 29600), (740, 27520), (800, 25456), (860, 23680), (925, 22016), (1075, 18944), (1184, 17200), (1280, 15910), (1376, 14800), (1480, 13760), (1591, 12800), (1600, 12728), (1720, 11840), (1850, 11008), (2150, 9472), (2368, 8600), (2560, 7955), (2752, 7400), (2960, 6880), (3182, 6400), (3200, 6364), (3440, 5920), (3700, 5504), (4300, 4736)]