8819920

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2689}}^1$

素因数の和:2743

約数の個数: 40

約数和(自身を含む): 21014280

約数和(自身を除く): 12194360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 2689, 3280, 5378, 10756, 13445, 21512, 26890, 43024, 53780, 107560, 110249, 215120, 220498, 440996, 551245, 881992, 1102490, 1763984, 2204980, 4409960, 8819920]

約数ペア:

[(1, 8819920), (2, 4409960), (4, 2204980), (5, 1763984), (8, 1102490), (10, 881992), (16, 551245), (20, 440996), (40, 220498), (41, 215120), (80, 110249), (82, 107560), (164, 53780), (205, 43024), (328, 26890), (410, 21512), (656, 13445), (820, 10756), (1640, 5378), (2689, 3280)]