1999210160

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{181}}^1\times {\mathrm{1367}}^1$

素因数の和:1662

約数の個数: 80

約数和(自身を含む): 4723572672

約数和(自身を除く): 2724362512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 181, 202, 362, 404, 505, 724, 808, 905, 1010, 1367, 1448, 1616, 1810, 2020, 2734, 2896, 3620, 4040, 5468, 6835, 7240, 8080, 10936, 13670, 14480, 18281, 21872, 27340, 36562, 54680, 73124, 91405, 109360, 138067, 146248, 182810, 247427, 276134, 292496, 365620, 494854, 552268, 690335, 731240, 989708, 1104536, 1237135, 1380670, 1462480, 1979416, 2209072, 2474270, 2761340, 3958832, 4948540, 5522680, 9897080, 11045360, 19794160, 24990127, 49980254, 99960508, 124950635, 199921016, 249901270, 399842032, 499802540, 999605080, 1999210160]

約数ペア:

[(1, 1999210160), (2, 999605080), (4, 499802540), (5, 399842032), (8, 249901270), (10, 199921016), (16, 124950635), (20, 99960508), (40, 49980254), (80, 24990127), (101, 19794160), (181, 11045360), (202, 9897080), (362, 5522680), (404, 4948540), (505, 3958832), (724, 2761340), (808, 2474270), (905, 2209072), (1010, 1979416), (1367, 1462480), (1448, 1380670), (1616, 1237135), (1810, 1104536), (2020, 989708), (2734, 731240), (2896, 690335), (3620, 552268), (4040, 494854), (5468, 365620), (6835, 292496), (7240, 276134), (8080, 247427), (10936, 182810), (13670, 146248), (14480, 138067), (18281, 109360), (21872, 91405), (27340, 73124), (36562, 54680)]