77843320

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^2\times {\mathrm{523}}^1$

素因数の和:656

約数の個数: 48

約数和(自身を含む): 178406280

約数和(自身を除く): 100562960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 523, 610, 1046, 1220, 2092, 2440, 2615, 3721, 4184, 5230, 7442, 10460, 14884, 18605, 20920, 29768, 31903, 37210, 63806, 74420, 127612, 148840, 159515, 255224, 319030, 638060, 1276120, 1946083, 3892166, 7784332, 9730415, 15568664, 19460830, 38921660, 77843320]

約数ペア:

[(1, 77843320), (2, 38921660), (4, 19460830), (5, 15568664), (8, 9730415), (10, 7784332), (20, 3892166), (40, 1946083), (61, 1276120), (122, 638060), (244, 319030), (305, 255224), (488, 159515), (523, 148840), (610, 127612), (1046, 74420), (1220, 63806), (2092, 37210), (2440, 31903), (2615, 29768), (3721, 20920), (4184, 18605), (5230, 14884), (7442, 10460)]