65421320

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{8563}}^1$

素因数の和:8765

約数の個数: 32

約数和(自身を含む): 147985920

約数和(自身を除く): 82564600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 3820, 7640, 8563, 17126, 34252, 42815, 68504, 85630, 171260, 342520, 1635533, 3271066, 6542132, 8177665, 13084264, 16355330, 32710660, 65421320]

約数ペア:

[(1, 65421320), (2, 32710660), (4, 16355330), (5, 13084264), (8, 8177665), (10, 6542132), (20, 3271066), (40, 1635533), (191, 342520), (382, 171260), (764, 85630), (955, 68504), (1528, 42815), (1910, 34252), (3820, 17126), (7640, 8563)]