80039920

素因数分解:

$2^4\times 5^1\times {\mathrm{523}}^1\times {\mathrm{1913}}^1$

素因数の和:2449

約数の個数: 40

約数和(自身を含む): 186546096

約数和(自身を除く): 106506176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 523, 1046, 1913, 2092, 2615, 3826, 4184, 5230, 7652, 8368, 9565, 10460, 15304, 19130, 20920, 30608, 38260, 41840, 76520, 153040, 1000499, 2000998, 4001996, 5002495, 8003992, 10004990, 16007984, 20009980, 40019960, 80039920]

約数ペア:

[(1, 80039920), (2, 40019960), (4, 20009980), (5, 16007984), (8, 10004990), (10, 8003992), (16, 5002495), (20, 4001996), (40, 2000998), (80, 1000499), (523, 153040), (1046, 76520), (1913, 41840), (2092, 38260), (2615, 30608), (3826, 20920), (4184, 19130), (5230, 15304), (7652, 10460), (8368, 9565)]