1639739978

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{647}}^1\times {\mathrm{997}}^1$

素因数の和:1718

約数の個数: 32

約数和(自身を含む): 2607510528

約数和(自身を除く): 967770550

約数列:

[1, 2, 31, 41, 62, 82, 647, 997, 1271, 1294, 1994, 2542, 20057, 26527, 30907, 40114, 40877, 53054, 61814, 81754, 645059, 822337, 1267187, 1290118, 1644674, 2534374, 19996829, 26447419, 39993658, 52894838, 819869989, 1639739978]

約数ペア:

[(1, 1639739978), (2, 819869989), (31, 52894838), (41, 39993658), (62, 26447419), (82, 19996829), (647, 2534374), (997, 1644674), (1271, 1290118), (1294, 1267187), (1994, 822337), (2542, 645059), (20057, 81754), (26527, 61814), (30907, 53054), (40114, 40877)]