19924480

素因数分解:

$2^9\times 5^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:247

約数の個数: 80

約数和(自身を含む): 49153104

約数和(自身を除く): 29228624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 160, 172, 181, 215, 256, 320, 344, 362, 430, 512, 640, 688, 724, 860, 905, 1280, 1376, 1448, 1720, 1810, 2560, 2752, 2896, 3440, 3620, 5504, 5792, 6880, 7240, 7783, 11008, 11584, 13760, 14480, 15566, 22016, 23168, 27520, 28960, 31132, 38915, 46336, 55040, 57920, 62264, 77830, 92672, 110080, 115840, 124528, 155660, 231680, 249056, 311320, 463360, 498112, 622640, 996224, 1245280, 1992448, 2490560, 3984896, 4981120, 9962240, 19924480]

約数ペア:

[(1, 19924480), (2, 9962240), (4, 4981120), (5, 3984896), (8, 2490560), (10, 1992448), (16, 1245280), (20, 996224), (32, 622640), (40, 498112), (43, 463360), (64, 311320), (80, 249056), (86, 231680), (128, 155660), (160, 124528), (172, 115840), (181, 110080), (215, 92672), (256, 77830), (320, 62264), (344, 57920), (362, 55040), (430, 46336), (512, 38915), (640, 31132), (688, 28960), (724, 27520), (860, 23168), (905, 22016), (1280, 15566), (1376, 14480), (1448, 13760), (1720, 11584), (1810, 11008), (2560, 7783), (2752, 7240), (2896, 6880), (3440, 5792), (3620, 5504)]