81564416

素因数分解:

$2^8\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{409}}^1$

素因数の和:485

約数の個数: 72

約数和(自身を含む): 175988400

約数和(自身を除く): 94423984

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 41, 64, 76, 82, 128, 152, 164, 256, 304, 328, 409, 608, 656, 779, 818, 1216, 1312, 1558, 1636, 2432, 2624, 3116, 3272, 4864, 5248, 6232, 6544, 7771, 10496, 12464, 13088, 15542, 16769, 24928, 26176, 31084, 33538, 49856, 52352, 62168, 67076, 99712, 104704, 124336, 134152, 199424, 248672, 268304, 318611, 497344, 536608, 637222, 994688, 1073216, 1274444, 1989376, 2146432, 2548888, 4292864, 5097776, 10195552, 20391104, 40782208, 81564416]

約数ペア:

[(1, 81564416), (2, 40782208), (4, 20391104), (8, 10195552), (16, 5097776), (19, 4292864), (32, 2548888), (38, 2146432), (41, 1989376), (64, 1274444), (76, 1073216), (82, 994688), (128, 637222), (152, 536608), (164, 497344), (256, 318611), (304, 268304), (328, 248672), (409, 199424), (608, 134152), (656, 124336), (779, 104704), (818, 99712), (1216, 67076), (1312, 62168), (1558, 52352), (1636, 49856), (2432, 33538), (2624, 31084), (3116, 26176), (3272, 24928), (4864, 16769), (5248, 15542), (6232, 13088), (6544, 12464), (7771, 10496)]