21958288

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1$

素因数の和:256

約数の個数: 80

約数和(自身を含む): 50621760

約数和(自身を除く): 28663472

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 34, 41, 44, 68, 82, 88, 136, 164, 176, 179, 187, 272, 328, 358, 374, 451, 656, 697, 716, 748, 902, 1394, 1432, 1496, 1804, 1969, 2788, 2864, 2992, 3043, 3608, 3938, 5576, 6086, 7216, 7339, 7667, 7876, 11152, 12172, 14678, 15334, 15752, 24344, 29356, 30668, 31504, 33473, 48688, 58712, 61336, 66946, 80729, 117424, 122672, 124763, 133892, 161458, 249526, 267784, 322916, 499052, 535568, 645832, 998104, 1291664, 1372393, 1996208, 2744786, 5489572, 10979144, 21958288]

約数ペア:

[(1, 21958288), (2, 10979144), (4, 5489572), (8, 2744786), (11, 1996208), (16, 1372393), (17, 1291664), (22, 998104), (34, 645832), (41, 535568), (44, 499052), (68, 322916), (82, 267784), (88, 249526), (136, 161458), (164, 133892), (176, 124763), (179, 122672), (187, 117424), (272, 80729), (328, 66946), (358, 61336), (374, 58712), (451, 48688), (656, 33473), (697, 31504), (716, 30668), (748, 29356), (902, 24344), (1394, 15752), (1432, 15334), (1496, 14678), (1804, 12172), (1969, 11152), (2788, 7876), (2864, 7667), (2992, 7339), (3043, 7216), (3608, 6086), (3938, 5576)]