21778240

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{269}}^1$

素因数の和:320

約数の個数: 112

約数和(自身を含む): 59253120

約数和(自身を除く): 37474880

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 32, 40, 44, 46, 55, 64, 80, 88, 92, 110, 115, 160, 176, 184, 220, 230, 253, 269, 320, 352, 368, 440, 460, 506, 538, 704, 736, 880, 920, 1012, 1076, 1265, 1345, 1472, 1760, 1840, 2024, 2152, 2530, 2690, 2959, 3520, 3680, 4048, 4304, 5060, 5380, 5918, 6187, 7360, 8096, 8608, 10120, 10760, 11836, 12374, 14795, 16192, 17216, 20240, 21520, 23672, 24748, 29590, 30935, 40480, 43040, 47344, 49496, 59180, 61870, 68057, 80960, 86080, 94688, 98992, 118360, 123740, 136114, 189376, 197984, 236720, 247480, 272228, 340285, 395968, 473440, 494960, 544456, 680570, 946880, 989920, 1088912, 1361140, 1979840, 2177824, 2722280, 4355648, 5444560, 10889120, 21778240]

約数ペア:

[(1, 21778240), (2, 10889120), (4, 5444560), (5, 4355648), (8, 2722280), (10, 2177824), (11, 1979840), (16, 1361140), (20, 1088912), (22, 989920), (23, 946880), (32, 680570), (40, 544456), (44, 494960), (46, 473440), (55, 395968), (64, 340285), (80, 272228), (88, 247480), (92, 236720), (110, 197984), (115, 189376), (160, 136114), (176, 123740), (184, 118360), (220, 98992), (230, 94688), (253, 86080), (269, 80960), (320, 68057), (352, 61870), (368, 59180), (440, 49496), (460, 47344), (506, 43040), (538, 40480), (704, 30935), (736, 29590), (880, 24748), (920, 23672), (1012, 21520), (1076, 20240), (1265, 17216), (1345, 16192), (1472, 14795), (1760, 12374), (1840, 11836), (2024, 10760), (2152, 10120), (2530, 8608), (2690, 8096), (2959, 7360), (3520, 6187), (3680, 5918), (4048, 5380), (4304, 5060)]