20615992

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{857}}^1$

素因数の和:991

約数の個数: 32

約数和(自身を含む): 40360320

約数和(自身を除く): 19744328

約数列:

[1, 2, 4, 8, 31, 62, 97, 124, 194, 248, 388, 776, 857, 1714, 3007, 3428, 6014, 6856, 12028, 24056, 26567, 53134, 83129, 106268, 166258, 212536, 332516, 665032, 2576999, 5153998, 10307996, 20615992]

約数ペア:

[(1, 20615992), (2, 10307996), (4, 5153998), (8, 2576999), (31, 665032), (62, 332516), (97, 212536), (124, 166258), (194, 106268), (248, 83129), (388, 53134), (776, 26567), (857, 24056), (1714, 12028), (3007, 6856), (3428, 6014)]