213325480

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1\times {\mathrm{487}}^1$

素因数の和:778

約数の個数: 64

約数和(自身を含む): 493309440

約数和(自身を除く): 279983960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 233, 235, 376, 466, 470, 487, 932, 940, 974, 1165, 1864, 1880, 1948, 2330, 2435, 3896, 4660, 4870, 9320, 9740, 10951, 19480, 21902, 22889, 43804, 45778, 54755, 87608, 91556, 109510, 113471, 114445, 183112, 219020, 226942, 228890, 438040, 453884, 457780, 567355, 907768, 915560, 1134710, 2269420, 4538840, 5333137, 10666274, 21332548, 26665685, 42665096, 53331370, 106662740, 213325480]

約数ペア:

[(1, 213325480), (2, 106662740), (4, 53331370), (5, 42665096), (8, 26665685), (10, 21332548), (20, 10666274), (40, 5333137), (47, 4538840), (94, 2269420), (188, 1134710), (233, 915560), (235, 907768), (376, 567355), (466, 457780), (470, 453884), (487, 438040), (932, 228890), (940, 226942), (974, 219020), (1165, 183112), (1864, 114445), (1880, 113471), (1948, 109510), (2330, 91556), (2435, 87608), (3896, 54755), (4660, 45778), (4870, 43804), (9320, 22889), (9740, 21902), (10951, 19480)]