19966620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:235

約数の個数: 96

約数和(自身を含む): 58544640

約数和(自身を除く): 38578020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 71, 86, 109, 129, 142, 172, 213, 215, 218, 258, 284, 327, 355, 426, 430, 436, 516, 545, 645, 654, 710, 852, 860, 1065, 1090, 1290, 1308, 1420, 1635, 2130, 2180, 2580, 3053, 3270, 4260, 4687, 6106, 6540, 7739, 9159, 9374, 12212, 14061, 15265, 15478, 18318, 18748, 23217, 23435, 28122, 30530, 30956, 36636, 38695, 45795, 46434, 46870, 56244, 61060, 70305, 77390, 91590, 92868, 93740, 116085, 140610, 154780, 183180, 232170, 281220, 332777, 464340, 665554, 998331, 1331108, 1663885, 1996662, 3327770, 3993324, 4991655, 6655540, 9983310, 19966620]

約数ペア:

[(1, 19966620), (2, 9983310), (3, 6655540), (4, 4991655), (5, 3993324), (6, 3327770), (10, 1996662), (12, 1663885), (15, 1331108), (20, 998331), (30, 665554), (43, 464340), (60, 332777), (71, 281220), (86, 232170), (109, 183180), (129, 154780), (142, 140610), (172, 116085), (213, 93740), (215, 92868), (218, 91590), (258, 77390), (284, 70305), (327, 61060), (355, 56244), (426, 46870), (430, 46434), (436, 45795), (516, 38695), (545, 36636), (645, 30956), (654, 30530), (710, 28122), (852, 23435), (860, 23217), (1065, 18748), (1090, 18318), (1290, 15478), (1308, 15265), (1420, 14061), (1635, 12212), (2130, 9374), (2180, 9159), (2580, 7739), (3053, 6540), (3270, 6106), (4260, 4687)]