20391104

素因数分解:

$2^6\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{409}}^1$

素因数の和:481

約数の個数: 56

約数和(自身を含む): 43738800

約数和(自身を除く): 23347696

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 41, 64, 76, 82, 152, 164, 304, 328, 409, 608, 656, 779, 818, 1216, 1312, 1558, 1636, 2624, 3116, 3272, 6232, 6544, 7771, 12464, 13088, 15542, 16769, 24928, 26176, 31084, 33538, 49856, 62168, 67076, 124336, 134152, 248672, 268304, 318611, 497344, 536608, 637222, 1073216, 1274444, 2548888, 5097776, 10195552, 20391104]

約数ペア:

[(1, 20391104), (2, 10195552), (4, 5097776), (8, 2548888), (16, 1274444), (19, 1073216), (32, 637222), (38, 536608), (41, 497344), (64, 318611), (76, 268304), (82, 248672), (152, 134152), (164, 124336), (304, 67076), (328, 62168), (409, 49856), (608, 33538), (656, 31084), (779, 26176), (818, 24928), (1216, 16769), (1312, 15542), (1558, 13088), (1636, 12464), (2624, 7771), (3116, 6544), (3272, 6232)]