26128520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1381}}^1$

素因数の和:1446

約数の個数: 64

約数和(自身を含む): 65672640

約数和(自身を除く): 39544120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 110, 172, 215, 220, 344, 430, 440, 473, 860, 946, 1381, 1720, 1892, 2365, 2762, 3784, 4730, 5524, 6905, 9460, 11048, 13810, 15191, 18920, 27620, 30382, 55240, 59383, 60764, 75955, 118766, 121528, 151910, 237532, 296915, 303820, 475064, 593830, 607640, 653213, 1187660, 1306426, 2375320, 2612852, 3266065, 5225704, 6532130, 13064260, 26128520]

約数ペア:

[(1, 26128520), (2, 13064260), (4, 6532130), (5, 5225704), (8, 3266065), (10, 2612852), (11, 2375320), (20, 1306426), (22, 1187660), (40, 653213), (43, 607640), (44, 593830), (55, 475064), (86, 303820), (88, 296915), (110, 237532), (172, 151910), (215, 121528), (220, 118766), (344, 75955), (430, 60764), (440, 59383), (473, 55240), (860, 30382), (946, 27620), (1381, 18920), (1720, 15191), (1892, 13810), (2365, 11048), (2762, 9460), (3784, 6905), (4730, 5524)]