19780776

素因数分解:

$2^3\times 3^2\times {\mathrm{257}}^1\times {\mathrm{1069}}^1$

素因数の和:1338

約数の個数: 48

約数和(自身を含む): 53831700

約数和(自身を除く): 34050924

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 257, 514, 771, 1028, 1069, 1542, 2056, 2138, 2313, 3084, 3207, 4276, 4626, 6168, 6414, 8552, 9252, 9621, 12828, 18504, 19242, 25656, 38484, 76968, 274733, 549466, 824199, 1098932, 1648398, 2197864, 2472597, 3296796, 4945194, 6593592, 9890388, 19780776]

約数ペア:

[(1, 19780776), (2, 9890388), (3, 6593592), (4, 4945194), (6, 3296796), (8, 2472597), (9, 2197864), (12, 1648398), (18, 1098932), (24, 824199), (36, 549466), (72, 274733), (257, 76968), (514, 38484), (771, 25656), (1028, 19242), (1069, 18504), (1542, 12828), (2056, 9621), (2138, 9252), (2313, 8552), (3084, 6414), (3207, 6168), (4276, 4626)]