20470828

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1$

素因数の和:299

約数の個数: 72

約数和(自身を含む): 45964800

約数和(自身を除く): 25493972

約数列:

[1, 2, 4, 7, 14, 19, 23, 28, 38, 46, 49, 76, 92, 98, 133, 161, 196, 239, 266, 322, 437, 478, 532, 644, 874, 931, 956, 1127, 1673, 1748, 1862, 2254, 3059, 3346, 3724, 4508, 4541, 5497, 6118, 6692, 9082, 10994, 11711, 12236, 18164, 21413, 21988, 23422, 31787, 38479, 42826, 46844, 63574, 76958, 85652, 104443, 127148, 153916, 208886, 222509, 269353, 417772, 445018, 538706, 731101, 890036, 1077412, 1462202, 2924404, 5117707, 10235414, 20470828]

約数ペア:

[(1, 20470828), (2, 10235414), (4, 5117707), (7, 2924404), (14, 1462202), (19, 1077412), (23, 890036), (28, 731101), (38, 538706), (46, 445018), (49, 417772), (76, 269353), (92, 222509), (98, 208886), (133, 153916), (161, 127148), (196, 104443), (239, 85652), (266, 76958), (322, 63574), (437, 46844), (478, 42826), (532, 38479), (644, 31787), (874, 23422), (931, 21988), (956, 21413), (1127, 18164), (1673, 12236), (1748, 11711), (1862, 10994), (2254, 9082), (3059, 6692), (3346, 6118), (3724, 5497), (4508, 4541)]