20451519361

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{64157}}^1$

素因数の和:64321

約数の個数: 32

約数和(自身を含む): 26213419008

約数和(自身を除く): 5761899647

約数列:

[1, 7, 13, 31, 91, 113, 217, 403, 791, 1469, 2821, 3503, 10283, 24521, 45539, 64157, 318773, 449099, 834041, 1988867, 5838287, 7249741, 13922069, 25855271, 50748187, 94246633, 180986897, 224741971, 659726431, 1573193797, 2921645623, 20451519361]

約数ペア:

[(1, 20451519361), (7, 2921645623), (13, 1573193797), (31, 659726431), (91, 224741971), (113, 180986897), (217, 94246633), (403, 50748187), (791, 25855271), (1469, 13922069), (2821, 7249741), (3503, 5838287), (10283, 1988867), (24521, 834041), (45539, 449099), (64157, 318773)]