20122716820

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{113}}^1\times {\mathrm{199}}^1\times {\mathrm{443}}^1$

素因数の和:865

約数の個数: 96

約数和(自身を含む): 43367788800

約数和(自身を除く): 23245071980

約数列:

[1, 2, 4, 5, 10, 20, 101, 113, 199, 202, 226, 398, 404, 443, 452, 505, 565, 796, 886, 995, 1010, 1130, 1772, 1990, 2020, 2215, 2260, 3980, 4430, 8860, 11413, 20099, 22487, 22826, 40198, 44743, 44974, 45652, 50059, 57065, 80396, 88157, 89486, 89948, 100118, 100495, 112435, 114130, 176314, 178972, 200236, 200990, 223715, 224870, 228260, 250295, 352628, 401980, 440785, 447430, 449740, 500590, 881570, 894860, 1001180, 1763140, 2271187, 4542374, 5055959, 8903857, 9084748, 9961741, 10111918, 11355935, 17807714, 19923482, 20223836, 22711870, 25279795, 35615428, 39846964, 44519285, 45423740, 49808705, 50559590, 89038570, 99617410, 101119180, 178077140, 199234820, 1006135841, 2012271682, 4024543364, 5030679205, 10061358410, 20122716820]

約数ペア:

[(1, 20122716820), (2, 10061358410), (4, 5030679205), (5, 4024543364), (10, 2012271682), (20, 1006135841), (101, 199234820), (113, 178077140), (199, 101119180), (202, 99617410), (226, 89038570), (398, 50559590), (404, 49808705), (443, 45423740), (452, 44519285), (505, 39846964), (565, 35615428), (796, 25279795), (886, 22711870), (995, 20223836), (1010, 19923482), (1130, 17807714), (1772, 11355935), (1990, 10111918), (2020, 9961741), (2215, 9084748), (2260, 8903857), (3980, 5055959), (4430, 4542374), (8860, 2271187), (11413, 1763140), (20099, 1001180), (22487, 894860), (22826, 881570), (40198, 500590), (44743, 449740), (44974, 447430), (45652, 440785), (50059, 401980), (57065, 352628), (80396, 250295), (88157, 228260), (89486, 224870), (89948, 223715), (100118, 200990), (100495, 200236), (112435, 178972), (114130, 176314)]