19857564

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{457}}^1$

素因数の和:555

約数の個数: 72

約数和(自身を含む): 54014688

約数和(自身を除く): 34157124

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 71, 102, 142, 153, 204, 213, 284, 306, 426, 457, 612, 639, 852, 914, 1207, 1278, 1371, 1828, 2414, 2556, 2742, 3621, 4113, 4828, 5484, 7242, 7769, 8226, 10863, 14484, 15538, 16452, 21726, 23307, 31076, 32447, 43452, 46614, 64894, 69921, 93228, 97341, 129788, 139842, 194682, 279684, 292023, 389364, 551599, 584046, 1103198, 1168092, 1654797, 2206396, 3309594, 4964391, 6619188, 9928782, 19857564]

約数ペア:

[(1, 19857564), (2, 9928782), (3, 6619188), (4, 4964391), (6, 3309594), (9, 2206396), (12, 1654797), (17, 1168092), (18, 1103198), (34, 584046), (36, 551599), (51, 389364), (68, 292023), (71, 279684), (102, 194682), (142, 139842), (153, 129788), (204, 97341), (213, 93228), (284, 69921), (306, 64894), (426, 46614), (457, 43452), (612, 32447), (639, 31076), (852, 23307), (914, 21726), (1207, 16452), (1278, 15538), (1371, 14484), (1828, 10863), (2414, 8226), (2556, 7769), (2742, 7242), (3621, 5484), (4113, 4828)]