18820900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{167}}^1$

素因数の和:218

約数の個数: 108

約数和(自身を含む): 49871808

約数和(自身を除く): 31050908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 25, 28, 35, 46, 49, 50, 70, 92, 98, 100, 115, 140, 161, 167, 175, 196, 230, 245, 322, 334, 350, 460, 490, 575, 644, 668, 700, 805, 835, 980, 1127, 1150, 1169, 1225, 1610, 1670, 2254, 2300, 2338, 2450, 3220, 3340, 3841, 4025, 4175, 4508, 4676, 4900, 5635, 5845, 7682, 8050, 8183, 8350, 11270, 11690, 15364, 16100, 16366, 16700, 19205, 22540, 23380, 26887, 28175, 29225, 32732, 38410, 40915, 53774, 56350, 58450, 76820, 81830, 96025, 107548, 112700, 116900, 134435, 163660, 188209, 192050, 204575, 268870, 376418, 384100, 409150, 537740, 672175, 752836, 818300, 941045, 1344350, 1882090, 2688700, 3764180, 4705225, 9410450, 18820900]

約数ペア:

[(1, 18820900), (2, 9410450), (4, 4705225), (5, 3764180), (7, 2688700), (10, 1882090), (14, 1344350), (20, 941045), (23, 818300), (25, 752836), (28, 672175), (35, 537740), (46, 409150), (49, 384100), (50, 376418), (70, 268870), (92, 204575), (98, 192050), (100, 188209), (115, 163660), (140, 134435), (161, 116900), (167, 112700), (175, 107548), (196, 96025), (230, 81830), (245, 76820), (322, 58450), (334, 56350), (350, 53774), (460, 40915), (490, 38410), (575, 32732), (644, 29225), (668, 28175), (700, 26887), (805, 23380), (835, 22540), (980, 19205), (1127, 16700), (1150, 16366), (1169, 16100), (1225, 15364), (1610, 11690), (1670, 11270), (2254, 8350), (2300, 8183), (2338, 8050), (2450, 7682), (3220, 5845), (3340, 5635), (3841, 4900), (4025, 4676), (4175, 4508)]