20716400

素因数分解:

$2^4\times 5^2\times {\mathrm{67}}^1\times {\mathrm{773}}^1$

素因数の和:858

約数の個数: 60

約数和(自身を含む): 50579352

約数和(自身を除く): 29862952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 67, 80, 100, 134, 200, 268, 335, 400, 536, 670, 773, 1072, 1340, 1546, 1675, 2680, 3092, 3350, 3865, 5360, 6184, 6700, 7730, 12368, 13400, 15460, 19325, 26800, 30920, 38650, 51791, 61840, 77300, 103582, 154600, 207164, 258955, 309200, 414328, 517910, 828656, 1035820, 1294775, 2071640, 2589550, 4143280, 5179100, 10358200, 20716400]

約数ペア:

[(1, 20716400), (2, 10358200), (4, 5179100), (5, 4143280), (8, 2589550), (10, 2071640), (16, 1294775), (20, 1035820), (25, 828656), (40, 517910), (50, 414328), (67, 309200), (80, 258955), (100, 207164), (134, 154600), (200, 103582), (268, 77300), (335, 61840), (400, 51791), (536, 38650), (670, 30920), (773, 26800), (1072, 19325), (1340, 15460), (1546, 13400), (1675, 12368), (2680, 7730), (3092, 6700), (3350, 6184), (3865, 5360)]