20659408

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{409}}^1$

素因数の和:476

約数の個数: 80

約数和(自身を含む): 51246720

約数和(自身を除く): 30587312

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 41, 44, 56, 77, 82, 88, 112, 154, 164, 176, 287, 308, 328, 409, 451, 574, 616, 656, 818, 902, 1148, 1232, 1636, 1804, 2296, 2863, 3157, 3272, 3608, 4499, 4592, 5726, 6314, 6544, 7216, 8998, 11452, 12628, 16769, 17996, 22904, 25256, 31493, 33538, 35992, 45808, 50512, 62986, 67076, 71984, 117383, 125972, 134152, 184459, 234766, 251944, 268304, 368918, 469532, 503888, 737836, 939064, 1291213, 1475672, 1878128, 2582426, 2951344, 5164852, 10329704, 20659408]

約数ペア:

[(1, 20659408), (2, 10329704), (4, 5164852), (7, 2951344), (8, 2582426), (11, 1878128), (14, 1475672), (16, 1291213), (22, 939064), (28, 737836), (41, 503888), (44, 469532), (56, 368918), (77, 268304), (82, 251944), (88, 234766), (112, 184459), (154, 134152), (164, 125972), (176, 117383), (287, 71984), (308, 67076), (328, 62986), (409, 50512), (451, 45808), (574, 35992), (616, 33538), (656, 31493), (818, 25256), (902, 22904), (1148, 17996), (1232, 16769), (1636, 12628), (1804, 11452), (2296, 8998), (2863, 7216), (3157, 6544), (3272, 6314), (3608, 5726), (4499, 4592)]