21480800

素因数分解:

$2^5\times 5^2\times {\mathrm{11}}^1\times {\mathrm{2441}}^1$

素因数の和:2472

約数の個数: 72

約数和(自身を含む): 57230712

約数和(自身を除く): 35749912

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 44, 50, 55, 80, 88, 100, 110, 160, 176, 200, 220, 275, 352, 400, 440, 550, 800, 880, 1100, 1760, 2200, 2441, 4400, 4882, 8800, 9764, 12205, 19528, 24410, 26851, 39056, 48820, 53702, 61025, 78112, 97640, 107404, 122050, 134255, 195280, 214808, 244100, 268510, 390560, 429616, 488200, 537020, 671275, 859232, 976400, 1074040, 1342550, 1952800, 2148080, 2685100, 4296160, 5370200, 10740400, 21480800]

約数ペア:

[(1, 21480800), (2, 10740400), (4, 5370200), (5, 4296160), (8, 2685100), (10, 2148080), (11, 1952800), (16, 1342550), (20, 1074040), (22, 976400), (25, 859232), (32, 671275), (40, 537020), (44, 488200), (50, 429616), (55, 390560), (80, 268510), (88, 244100), (100, 214808), (110, 195280), (160, 134255), (176, 122050), (200, 107404), (220, 97640), (275, 78112), (352, 61025), (400, 53702), (440, 48820), (550, 39056), (800, 26851), (880, 24410), (1100, 19528), (1760, 12205), (2200, 9764), (2441, 8800), (4400, 4882)]