20269880

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1619}}^1$

素因数の和:1943

約数の個数: 32

約数和(自身を含む): 45781200

約数和(自身を除く): 25511320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 1619, 2504, 3130, 3238, 6260, 6476, 8095, 12520, 12952, 16190, 32380, 64760, 506747, 1013494, 2026988, 2533735, 4053976, 5067470, 10134940, 20269880]

約数ペア:

[(1, 20269880), (2, 10134940), (4, 5067470), (5, 4053976), (8, 2533735), (10, 2026988), (20, 1013494), (40, 506747), (313, 64760), (626, 32380), (1252, 16190), (1565, 12952), (1619, 12520), (2504, 8095), (3130, 6476), (3238, 6260)]