40420880

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2539}}^1$

素因数の和:2751

約数の個数: 40

約数和(自身を含む): 94488000

約数和(自身を除く): 54067120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1592, 1990, 2539, 3184, 3980, 5078, 7960, 10156, 12695, 15920, 20312, 25390, 40624, 50780, 101560, 203120, 505261, 1010522, 2021044, 2526305, 4042088, 5052610, 8084176, 10105220, 20210440, 40420880]

約数ペア:

[(1, 40420880), (2, 20210440), (4, 10105220), (5, 8084176), (8, 5052610), (10, 4042088), (16, 2526305), (20, 2021044), (40, 1010522), (80, 505261), (199, 203120), (398, 101560), (796, 50780), (995, 40624), (1592, 25390), (1990, 20312), (2539, 15920), (3184, 12695), (3980, 10156), (5078, 7960)]