20447680

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:222

約数の個数: 112

約数和(自身を含む): 54900576

約数和(自身を除く): 34452896

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 37, 40, 44, 55, 64, 74, 80, 88, 110, 148, 157, 160, 176, 185, 220, 296, 314, 320, 352, 370, 407, 440, 592, 628, 704, 740, 785, 814, 880, 1184, 1256, 1480, 1570, 1628, 1727, 1760, 2035, 2368, 2512, 2960, 3140, 3256, 3454, 3520, 4070, 5024, 5809, 5920, 6280, 6512, 6908, 8140, 8635, 10048, 11618, 11840, 12560, 13024, 13816, 16280, 17270, 23236, 25120, 26048, 27632, 29045, 32560, 34540, 46472, 50240, 55264, 58090, 63899, 65120, 69080, 92944, 110528, 116180, 127798, 130240, 138160, 185888, 232360, 255596, 276320, 319495, 371776, 464720, 511192, 552640, 638990, 929440, 1022384, 1277980, 1858880, 2044768, 2555960, 4089536, 5111920, 10223840, 20447680]

約数ペア:

[(1, 20447680), (2, 10223840), (4, 5111920), (5, 4089536), (8, 2555960), (10, 2044768), (11, 1858880), (16, 1277980), (20, 1022384), (22, 929440), (32, 638990), (37, 552640), (40, 511192), (44, 464720), (55, 371776), (64, 319495), (74, 276320), (80, 255596), (88, 232360), (110, 185888), (148, 138160), (157, 130240), (160, 127798), (176, 116180), (185, 110528), (220, 92944), (296, 69080), (314, 65120), (320, 63899), (352, 58090), (370, 55264), (407, 50240), (440, 46472), (592, 34540), (628, 32560), (704, 29045), (740, 27632), (785, 26048), (814, 25120), (880, 23236), (1184, 17270), (1256, 16280), (1480, 13816), (1570, 13024), (1628, 12560), (1727, 11840), (1760, 11618), (2035, 10048), (2368, 8635), (2512, 8140), (2960, 6908), (3140, 6512), (3256, 6280), (3454, 5920), (3520, 5809), (4070, 5024)]