20781679348

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1\times {\mathrm{499}}^1$

素因数の和:809

約数の個数: 96

約数和(自身を含む): 39809952000

約数和(自身を除く): 19028272652

約数列:

[1, 2, 4, 23, 41, 46, 61, 82, 92, 122, 164, 181, 244, 362, 499, 724, 943, 998, 1403, 1886, 1996, 2501, 2806, 3772, 4163, 5002, 5612, 7421, 8326, 10004, 11041, 11477, 14842, 16652, 20459, 22082, 22954, 29684, 30439, 40918, 44164, 45908, 57523, 60878, 81836, 90319, 115046, 121756, 170683, 180638, 230092, 253943, 341366, 361276, 452681, 470557, 507886, 682732, 700097, 905362, 941114, 1015772, 1247999, 1400194, 1810724, 1882228, 2077337, 2495998, 2800388, 3703079, 4154674, 4991996, 5509459, 7406158, 8309348, 10411663, 11018918, 14812316, 20823326, 22037836, 28703977, 41646652, 57407954, 85170817, 114815908, 126717557, 170341634, 225887819, 253435114, 340683268, 451775638, 506870228, 903551276, 5195419837, 10390839674, 20781679348]

約数ペア:

[(1, 20781679348), (2, 10390839674), (4, 5195419837), (23, 903551276), (41, 506870228), (46, 451775638), (61, 340683268), (82, 253435114), (92, 225887819), (122, 170341634), (164, 126717557), (181, 114815908), (244, 85170817), (362, 57407954), (499, 41646652), (724, 28703977), (943, 22037836), (998, 20823326), (1403, 14812316), (1886, 11018918), (1996, 10411663), (2501, 8309348), (2806, 7406158), (3772, 5509459), (4163, 4991996), (5002, 4154674), (5612, 3703079), (7421, 2800388), (8326, 2495998), (10004, 2077337), (11041, 1882228), (11477, 1810724), (14842, 1400194), (16652, 1247999), (20459, 1015772), (22082, 941114), (22954, 905362), (29684, 700097), (30439, 682732), (40918, 507886), (44164, 470557), (45908, 452681), (57523, 361276), (60878, 341366), (81836, 253943), (90319, 230092), (115046, 180638), (121756, 170683)]