21765916

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 42632352

約数和(自身を除く): 20866436

約数列:

[1, 2, 4, 17, 34, 37, 41, 68, 74, 82, 148, 164, 211, 422, 629, 697, 844, 1258, 1394, 1517, 2516, 2788, 3034, 3587, 6068, 7174, 7807, 8651, 14348, 15614, 17302, 25789, 31228, 34604, 51578, 103156, 132719, 147067, 265438, 294134, 320087, 530876, 588268, 640174, 1280348, 5441479, 10882958, 21765916]

約数ペア:

[(1, 21765916), (2, 10882958), (4, 5441479), (17, 1280348), (34, 640174), (37, 588268), (41, 530876), (68, 320087), (74, 294134), (82, 265438), (148, 147067), (164, 132719), (211, 103156), (422, 51578), (629, 34604), (697, 31228), (844, 25789), (1258, 17302), (1394, 15614), (1517, 14348), (2516, 8651), (2788, 7807), (3034, 7174), (3587, 6068)]