20539760

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13513}}^1$

素因数の和:13545

約数の個数: 40

約数和(自身を含む): 50272080

約数和(自身を除く): 29732320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13513, 27026, 54052, 67565, 108104, 135130, 216208, 256747, 270260, 513494, 540520, 1026988, 1081040, 1283735, 2053976, 2567470, 4107952, 5134940, 10269880, 20539760]

約数ペア:

[(1, 20539760), (2, 10269880), (4, 5134940), (5, 4107952), (8, 2567470), (10, 2053976), (16, 1283735), (19, 1081040), (20, 1026988), (38, 540520), (40, 513494), (76, 270260), (80, 256747), (95, 216208), (152, 135130), (190, 108104), (304, 67565), (380, 54052), (760, 27026), (1520, 13513)]