19891144

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{307}}^1$

素因数の和:422

約数の個数: 64

約数和(自身を含む): 46569600

約数和(自身を除く): 26678456

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 89, 91, 104, 178, 182, 307, 356, 364, 614, 623, 712, 728, 1157, 1228, 1246, 2149, 2314, 2456, 2492, 3991, 4298, 4628, 4984, 7982, 8099, 8596, 9256, 15964, 16198, 17192, 27323, 27937, 31928, 32396, 54646, 55874, 64792, 109292, 111748, 191261, 218584, 223496, 355199, 382522, 710398, 765044, 1420796, 1530088, 2486393, 2841592, 4972786, 9945572, 19891144]

約数ペア:

[(1, 19891144), (2, 9945572), (4, 4972786), (7, 2841592), (8, 2486393), (13, 1530088), (14, 1420796), (26, 765044), (28, 710398), (52, 382522), (56, 355199), (89, 223496), (91, 218584), (104, 191261), (178, 111748), (182, 109292), (307, 64792), (356, 55874), (364, 54646), (614, 32396), (623, 31928), (712, 27937), (728, 27323), (1157, 17192), (1228, 16198), (1246, 15964), (2149, 9256), (2314, 8596), (2456, 8099), (2492, 7982), (3991, 4984), (4298, 4628)]