21882520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1213}}^1$

素因数の和:1276

約数の個数: 64

約数和(自身を含む): 55067040

約数和(自身を除く): 33184520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 44, 55, 82, 88, 110, 164, 205, 220, 328, 410, 440, 451, 820, 902, 1213, 1640, 1804, 2255, 2426, 3608, 4510, 4852, 6065, 9020, 9704, 12130, 13343, 18040, 24260, 26686, 48520, 49733, 53372, 66715, 99466, 106744, 133430, 198932, 248665, 266860, 397864, 497330, 533720, 547063, 994660, 1094126, 1989320, 2188252, 2735315, 4376504, 5470630, 10941260, 21882520]

約数ペア:

[(1, 21882520), (2, 10941260), (4, 5470630), (5, 4376504), (8, 2735315), (10, 2188252), (11, 1989320), (20, 1094126), (22, 994660), (40, 547063), (41, 533720), (44, 497330), (55, 397864), (82, 266860), (88, 248665), (110, 198932), (164, 133430), (205, 106744), (220, 99466), (328, 66715), (410, 53372), (440, 49733), (451, 48520), (820, 26686), (902, 24260), (1213, 18040), (1640, 13343), (1804, 12130), (2255, 9704), (2426, 9020), (3608, 6065), (4510, 4852)]