1821915757880

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{12421}}^1\times {\mathrm{36307}}^1$

素因数の和:48840

約数の個数: 64

約数和(自身を含む): 4140345019680

約数和(自身を除く): 2318429261800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 12421, 24842, 36307, 49684, 62105, 72614, 99368, 124210, 145228, 181535, 248420, 290456, 363070, 496840, 726140, 1254521, 1452280, 2509042, 3667007, 5018084, 6272605, 7334014, 10036168, 12545210, 14668028, 18335035, 25090420, 29336056, 36670070, 50180840, 73340140, 146680280, 450969247, 901938494, 1803876988, 2254846235, 3607753976, 4509692470, 9019384940, 18038769880, 45547893947, 91095787894, 182191575788, 227739469735, 364383151576, 455478939470, 910957878940, 1821915757880]

約数ペア:

[(1, 1821915757880), (2, 910957878940), (4, 455478939470), (5, 364383151576), (8, 227739469735), (10, 182191575788), (20, 91095787894), (40, 45547893947), (101, 18038769880), (202, 9019384940), (404, 4509692470), (505, 3607753976), (808, 2254846235), (1010, 1803876988), (2020, 901938494), (4040, 450969247), (12421, 146680280), (24842, 73340140), (36307, 50180840), (49684, 36670070), (62105, 29336056), (72614, 25090420), (99368, 18335035), (124210, 14668028), (145228, 12545210), (181535, 10036168), (248420, 7334014), (290456, 6272605), (363070, 5018084), (496840, 3667007), (726140, 2509042), (1254521, 1452280)]