2779232840

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{311}}^1\times {\mathrm{1423}}^1$

素因数の和:1902

約数の個数: 64

約数和(自身を含む): 6317775360

約数和(自身を除く): 3538542520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 311, 314, 622, 628, 785, 1244, 1256, 1423, 1555, 1570, 2488, 2846, 3110, 3140, 5692, 6220, 6280, 7115, 11384, 12440, 14230, 28460, 48827, 56920, 97654, 195308, 223411, 244135, 390616, 442553, 446822, 488270, 885106, 893644, 976540, 1117055, 1770212, 1787288, 1953080, 2212765, 2234110, 3540424, 4425530, 4468220, 8851060, 8936440, 17702120, 69480821, 138961642, 277923284, 347404105, 555846568, 694808210, 1389616420, 2779232840]

約数ペア:

[(1, 2779232840), (2, 1389616420), (4, 694808210), (5, 555846568), (8, 347404105), (10, 277923284), (20, 138961642), (40, 69480821), (157, 17702120), (311, 8936440), (314, 8851060), (622, 4468220), (628, 4425530), (785, 3540424), (1244, 2234110), (1256, 2212765), (1423, 1953080), (1555, 1787288), (1570, 1770212), (2488, 1117055), (2846, 976540), (3110, 893644), (3140, 885106), (5692, 488270), (6220, 446822), (6280, 442553), (7115, 390616), (11384, 244135), (12440, 223411), (14230, 195308), (28460, 97654), (48827, 56920)]