280147780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{67021}}^1$

素因数の和:67060

約数の個数: 48

約数和(自身を含む): 675581760

約数和(自身を除く): 395433980

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 67021, 134042, 268084, 335105, 670210, 737231, 1273399, 1340420, 1474462, 2546798, 2948924, 3686155, 5093596, 6366995, 7372310, 12733990, 14007389, 14744620, 25467980, 28014778, 56029556, 70036945, 140073890, 280147780]

約数ペア:

[(1, 280147780), (2, 140073890), (4, 70036945), (5, 56029556), (10, 28014778), (11, 25467980), (19, 14744620), (20, 14007389), (22, 12733990), (38, 7372310), (44, 6366995), (55, 5093596), (76, 3686155), (95, 2948924), (110, 2546798), (190, 1474462), (209, 1340420), (220, 1273399), (380, 737231), (418, 670210), (836, 335105), (1045, 268084), (2090, 134042), (4180, 67021)]