66819880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53887}}^1$

素因数の和:53929

約数の個数: 32

約数和(自身を含む): 155197440

約数和(自身を除く): 88377560

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 53887, 107774, 215548, 269435, 431096, 538870, 1077740, 1670497, 2155480, 3340994, 6681988, 8352485, 13363976, 16704970, 33409940, 66819880]

約数ペア:

[(1, 66819880), (2, 33409940), (4, 16704970), (5, 13363976), (8, 8352485), (10, 6681988), (20, 3340994), (31, 2155480), (40, 1670497), (62, 1077740), (124, 538870), (155, 431096), (248, 269435), (310, 215548), (620, 107774), (1240, 53887)]