19392940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1951}}^1$

素因数の和:2038

約数の個数: 48

約数和(自身を含む): 47222784

約数和(自身を除く): 27829844

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1951, 1988, 2485, 3902, 4970, 7804, 9755, 9940, 13657, 19510, 27314, 39020, 54628, 68285, 136570, 138521, 273140, 277042, 554084, 692605, 969647, 1385210, 1939294, 2770420, 3878588, 4848235, 9696470, 19392940]

約数ペア:

[(1, 19392940), (2, 9696470), (4, 4848235), (5, 3878588), (7, 2770420), (10, 1939294), (14, 1385210), (20, 969647), (28, 692605), (35, 554084), (70, 277042), (71, 273140), (140, 138521), (142, 136570), (284, 68285), (355, 54628), (497, 39020), (710, 27314), (994, 19510), (1420, 13657), (1951, 9940), (1988, 9755), (2485, 7804), (3902, 4970)]