20505324

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{811}}^1$

素因数の和:875

約数の個数: 72

約数和(自身を含む): 57021888

約数和(自身を除く): 36516564

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 43, 49, 84, 86, 98, 129, 147, 172, 196, 258, 294, 301, 516, 588, 602, 811, 903, 1204, 1622, 1806, 2107, 2433, 3244, 3612, 4214, 4866, 5677, 6321, 8428, 9732, 11354, 12642, 17031, 22708, 25284, 34062, 34873, 39739, 68124, 69746, 79478, 104619, 119217, 139492, 158956, 209238, 238434, 244111, 418476, 476868, 488222, 732333, 976444, 1464666, 1708777, 2929332, 3417554, 5126331, 6835108, 10252662, 20505324]

約数ペア:

[(1, 20505324), (2, 10252662), (3, 6835108), (4, 5126331), (6, 3417554), (7, 2929332), (12, 1708777), (14, 1464666), (21, 976444), (28, 732333), (42, 488222), (43, 476868), (49, 418476), (84, 244111), (86, 238434), (98, 209238), (129, 158956), (147, 139492), (172, 119217), (196, 104619), (258, 79478), (294, 69746), (301, 68124), (516, 39739), (588, 34873), (602, 34062), (811, 25284), (903, 22708), (1204, 17031), (1622, 12642), (1806, 11354), (2107, 9732), (2433, 8428), (3244, 6321), (3612, 5677), (4214, 4866)]