388640240

素因数分解:

$2^4\times 5^1\times {\mathrm{193}}^1\times {\mathrm{25171}}^1$

素因数の和:25377

約数の個数: 40

約数和(自身を含む): 908306448

約数和(自身を除く): 519666208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 193, 386, 772, 965, 1544, 1930, 3088, 3860, 7720, 15440, 25171, 50342, 100684, 125855, 201368, 251710, 402736, 503420, 1006840, 2013680, 4858003, 9716006, 19432012, 24290015, 38864024, 48580030, 77728048, 97160060, 194320120, 388640240]

約数ペア:

[(1, 388640240), (2, 194320120), (4, 97160060), (5, 77728048), (8, 48580030), (10, 38864024), (16, 24290015), (20, 19432012), (40, 9716006), (80, 4858003), (193, 2013680), (386, 1006840), (772, 503420), (965, 402736), (1544, 251710), (1930, 201368), (3088, 125855), (3860, 100684), (7720, 50342), (15440, 25171)]