20881300

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{463}}^1$

素因数の和:529

約数の個数: 72

約数和(自身を含む): 50746752

約数和(自身を除く): 29865452

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 41, 44, 50, 55, 82, 100, 110, 164, 205, 220, 275, 410, 451, 463, 550, 820, 902, 926, 1025, 1100, 1804, 1852, 2050, 2255, 2315, 4100, 4510, 4630, 5093, 9020, 9260, 10186, 11275, 11575, 18983, 20372, 22550, 23150, 25465, 37966, 45100, 46300, 50930, 75932, 94915, 101860, 127325, 189830, 208813, 254650, 379660, 417626, 474575, 509300, 835252, 949150, 1044065, 1898300, 2088130, 4176260, 5220325, 10440650, 20881300]

約数ペア:

[(1, 20881300), (2, 10440650), (4, 5220325), (5, 4176260), (10, 2088130), (11, 1898300), (20, 1044065), (22, 949150), (25, 835252), (41, 509300), (44, 474575), (50, 417626), (55, 379660), (82, 254650), (100, 208813), (110, 189830), (164, 127325), (205, 101860), (220, 94915), (275, 75932), (410, 50930), (451, 46300), (463, 45100), (550, 37966), (820, 25465), (902, 23150), (926, 22550), (1025, 20372), (1100, 18983), (1804, 11575), (1852, 11275), (2050, 10186), (2255, 9260), (2315, 9020), (4100, 5093), (4510, 4630)]