204517890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{43}}^2\times {\mathrm{1229}}^1$

素因数の和:1328

約数の個数: 72

約数和(自身を含む): 544843260

約数和(自身を除く): 340325370

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 43, 45, 86, 90, 129, 215, 258, 387, 430, 645, 774, 1229, 1290, 1849, 1935, 2458, 3687, 3698, 3870, 5547, 6145, 7374, 9245, 11061, 11094, 12290, 16641, 18435, 18490, 22122, 27735, 33282, 36870, 52847, 55305, 55470, 83205, 105694, 110610, 158541, 166410, 264235, 317082, 475623, 528470, 792705, 951246, 1585410, 2272421, 2378115, 4544842, 4756230, 6817263, 11362105, 13634526, 20451789, 22724210, 34086315, 40903578, 68172630, 102258945, 204517890]

約数ペア:

[(1, 204517890), (2, 102258945), (3, 68172630), (5, 40903578), (6, 34086315), (9, 22724210), (10, 20451789), (15, 13634526), (18, 11362105), (30, 6817263), (43, 4756230), (45, 4544842), (86, 2378115), (90, 2272421), (129, 1585410), (215, 951246), (258, 792705), (387, 528470), (430, 475623), (645, 317082), (774, 264235), (1229, 166410), (1290, 158541), (1849, 110610), (1935, 105694), (2458, 83205), (3687, 55470), (3698, 55305), (3870, 52847), (5547, 36870), (6145, 33282), (7374, 27735), (9245, 22122), (11061, 18490), (11094, 18435), (12290, 16641)]