221481040

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{647}}^1$

素因数の和:1060

約数の個数: 80

約数和(自身を含む): 564071040

約数和(自身を除く): 342590000

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 389, 440, 647, 778, 880, 1294, 1556, 1945, 2588, 3112, 3235, 3890, 4279, 5176, 6224, 6470, 7117, 7780, 8558, 10352, 12940, 14234, 15560, 17116, 21395, 25880, 28468, 31120, 34232, 35585, 42790, 51760, 56936, 68464, 71170, 85580, 113872, 142340, 171160, 251683, 284680, 342320, 503366, 569360, 1006732, 1258415, 2013464, 2516830, 2768513, 4026928, 5033660, 5537026, 10067320, 11074052, 13842565, 20134640, 22148104, 27685130, 44296208, 55370260, 110740520, 221481040]

約数ペア:

[(1, 221481040), (2, 110740520), (4, 55370260), (5, 44296208), (8, 27685130), (10, 22148104), (11, 20134640), (16, 13842565), (20, 11074052), (22, 10067320), (40, 5537026), (44, 5033660), (55, 4026928), (80, 2768513), (88, 2516830), (110, 2013464), (176, 1258415), (220, 1006732), (389, 569360), (440, 503366), (647, 342320), (778, 284680), (880, 251683), (1294, 171160), (1556, 142340), (1945, 113872), (2588, 85580), (3112, 71170), (3235, 68464), (3890, 56936), (4279, 51760), (5176, 42790), (6224, 35585), (6470, 34232), (7117, 31120), (7780, 28468), (8558, 25880), (10352, 21395), (12940, 17116), (14234, 15560)]