166406420

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{293}}^1\times {\mathrm{389}}^1$

素因数の和:764

約数の個数: 48

約数和(自身を含む): 356363280

約数和(自身を除く): 189956860

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 293, 365, 389, 586, 730, 778, 1172, 1460, 1465, 1556, 1945, 2930, 3890, 5860, 7780, 21389, 28397, 42778, 56794, 85556, 106945, 113588, 113977, 141985, 213890, 227954, 283970, 427780, 455908, 567940, 569885, 1139770, 2279540, 8320321, 16640642, 33281284, 41601605, 83203210, 166406420]

約数ペア:

[(1, 166406420), (2, 83203210), (4, 41601605), (5, 33281284), (10, 16640642), (20, 8320321), (73, 2279540), (146, 1139770), (292, 569885), (293, 567940), (365, 455908), (389, 427780), (586, 283970), (730, 227954), (778, 213890), (1172, 141985), (1460, 113977), (1465, 113588), (1556, 106945), (1945, 85556), (2930, 56794), (3890, 42778), (5860, 28397), (7780, 21389)]