66704800

素因数分解:

$2^5\times 5^2\times {\mathrm{199}}^1\times {\mathrm{419}}^1$

素因数の和:638

約数の個数: 72

約数和(自身を含む): 164052000

約数和(自身を除く): 97347200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 199, 200, 398, 400, 419, 796, 800, 838, 995, 1592, 1676, 1990, 2095, 3184, 3352, 3980, 4190, 4975, 6368, 6704, 7960, 8380, 9950, 10475, 13408, 15920, 16760, 19900, 20950, 31840, 33520, 39800, 41900, 67040, 79600, 83381, 83800, 159200, 166762, 167600, 333524, 335200, 416905, 667048, 833810, 1334096, 1667620, 2084525, 2668192, 3335240, 4169050, 6670480, 8338100, 13340960, 16676200, 33352400, 66704800]

約数ペア:

[(1, 66704800), (2, 33352400), (4, 16676200), (5, 13340960), (8, 8338100), (10, 6670480), (16, 4169050), (20, 3335240), (25, 2668192), (32, 2084525), (40, 1667620), (50, 1334096), (80, 833810), (100, 667048), (160, 416905), (199, 335200), (200, 333524), (398, 167600), (400, 166762), (419, 159200), (796, 83800), (800, 83381), (838, 79600), (995, 67040), (1592, 41900), (1676, 39800), (1990, 33520), (2095, 31840), (3184, 20950), (3352, 19900), (3980, 16760), (4190, 15920), (4975, 13408), (6368, 10475), (6704, 9950), (7960, 8380)]