28716420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20809}}^1$

素因数の和:20844

約数の個数: 48

約数和(自身を含む): 83905920

約数和(自身を除く): 55189500

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380, 20809, 41618, 62427, 83236, 104045, 124854, 208090, 249708, 312135, 416180, 478607, 624270, 957214, 1248540, 1435821, 1914428, 2393035, 2871642, 4786070, 5743284, 7179105, 9572140, 14358210, 28716420]

約数ペア:

[(1, 28716420), (2, 14358210), (3, 9572140), (4, 7179105), (5, 5743284), (6, 4786070), (10, 2871642), (12, 2393035), (15, 1914428), (20, 1435821), (23, 1248540), (30, 957214), (46, 624270), (60, 478607), (69, 416180), (92, 312135), (115, 249708), (138, 208090), (230, 124854), (276, 104045), (345, 83236), (460, 62427), (690, 41618), (1380, 20809)]