278322849

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{1481}}^1$

素因数の和:1670

約数の個数: 48

約数和(自身を含む): 487044480

約数和(自身を除く): 208721631

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 157, 171, 399, 471, 1099, 1197, 1413, 1481, 2983, 3297, 4443, 8949, 9891, 10367, 13329, 20881, 26847, 28139, 31101, 62643, 84417, 93303, 187929, 196973, 232517, 253251, 590919, 697551, 1627619, 1772757, 2092653, 4417823, 4882857, 13253469, 14648571, 30924761, 39760407, 92774283, 278322849]

約数ペア:

[(1, 278322849), (3, 92774283), (7, 39760407), (9, 30924761), (19, 14648571), (21, 13253469), (57, 4882857), (63, 4417823), (133, 2092653), (157, 1772757), (171, 1627619), (399, 697551), (471, 590919), (1099, 253251), (1197, 232517), (1413, 196973), (1481, 187929), (2983, 93303), (3297, 84417), (4443, 62643), (8949, 31101), (9891, 28139), (10367, 26847), (13329, 20881)]