51887200

素因数分解:

$2^5\times 5^2\times {\mathrm{79}}^1\times {\mathrm{821}}^1$

素因数の和:920

約数の個数: 72

約数和(自身を含む): 128429280

約数和(自身を除く): 76542080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 79, 80, 100, 158, 160, 200, 316, 395, 400, 632, 790, 800, 821, 1264, 1580, 1642, 1975, 2528, 3160, 3284, 3950, 4105, 6320, 6568, 7900, 8210, 12640, 13136, 15800, 16420, 20525, 26272, 31600, 32840, 41050, 63200, 64859, 65680, 82100, 129718, 131360, 164200, 259436, 324295, 328400, 518872, 648590, 656800, 1037744, 1297180, 1621475, 2075488, 2594360, 3242950, 5188720, 6485900, 10377440, 12971800, 25943600, 51887200]

約数ペア:

[(1, 51887200), (2, 25943600), (4, 12971800), (5, 10377440), (8, 6485900), (10, 5188720), (16, 3242950), (20, 2594360), (25, 2075488), (32, 1621475), (40, 1297180), (50, 1037744), (79, 656800), (80, 648590), (100, 518872), (158, 328400), (160, 324295), (200, 259436), (316, 164200), (395, 131360), (400, 129718), (632, 82100), (790, 65680), (800, 64859), (821, 63200), (1264, 41050), (1580, 32840), (1642, 31600), (1975, 26272), (2528, 20525), (3160, 16420), (3284, 15800), (3950, 13136), (4105, 12640), (6320, 8210), (6568, 7900)]