129517720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1\times {\mathrm{293}}^1$

素因数の和:604

約数の個数: 64

約数和(自身を含む): 300373920

約数和(自身を除く): 170856200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 257, 293, 344, 430, 514, 586, 860, 1028, 1172, 1285, 1465, 1720, 2056, 2344, 2570, 2930, 5140, 5860, 10280, 11051, 11720, 12599, 22102, 25198, 44204, 50396, 55255, 62995, 75301, 88408, 100792, 110510, 125990, 150602, 221020, 251980, 301204, 376505, 442040, 503960, 602408, 753010, 1506020, 3012040, 3237943, 6475886, 12951772, 16189715, 25903544, 32379430, 64758860, 129517720]

約数ペア:

[(1, 129517720), (2, 64758860), (4, 32379430), (5, 25903544), (8, 16189715), (10, 12951772), (20, 6475886), (40, 3237943), (43, 3012040), (86, 1506020), (172, 753010), (215, 602408), (257, 503960), (293, 442040), (344, 376505), (430, 301204), (514, 251980), (586, 221020), (860, 150602), (1028, 125990), (1172, 110510), (1285, 100792), (1465, 88408), (1720, 75301), (2056, 62995), (2344, 55255), (2570, 50396), (2930, 44204), (5140, 25198), (5860, 22102), (10280, 12599), (11051, 11720)]