389079760

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{156887}}^1$

素因数の和:156931

約数の個数: 40

約数和(自身を含む): 933797376

約数和(自身を除く): 544717616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 156887, 313774, 627548, 784435, 1255096, 1568870, 2510192, 3137740, 4863497, 6275480, 9726994, 12550960, 19453988, 24317485, 38907976, 48634970, 77815952, 97269940, 194539880, 389079760]

約数ペア:

[(1, 389079760), (2, 194539880), (4, 97269940), (5, 77815952), (8, 48634970), (10, 38907976), (16, 24317485), (20, 19453988), (31, 12550960), (40, 9726994), (62, 6275480), (80, 4863497), (124, 3137740), (155, 2510192), (248, 1568870), (310, 1255096), (496, 784435), (620, 627548), (1240, 313774), (2480, 156887)]