161204240

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{1109}}^1$

素因数の和:1224

約数の個数: 80

約数和(自身を含む): 396403200

約数和(自身を除く): 235198960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 79, 80, 92, 115, 158, 184, 230, 316, 368, 395, 460, 632, 790, 920, 1109, 1264, 1580, 1817, 1840, 2218, 3160, 3634, 4436, 5545, 6320, 7268, 8872, 9085, 11090, 14536, 17744, 18170, 22180, 25507, 29072, 36340, 44360, 51014, 72680, 87611, 88720, 102028, 127535, 145360, 175222, 204056, 255070, 350444, 408112, 438055, 510140, 700888, 876110, 1020280, 1401776, 1752220, 2015053, 2040560, 3504440, 4030106, 7008880, 8060212, 10075265, 16120424, 20150530, 32240848, 40301060, 80602120, 161204240]

約数ペア:

[(1, 161204240), (2, 80602120), (4, 40301060), (5, 32240848), (8, 20150530), (10, 16120424), (16, 10075265), (20, 8060212), (23, 7008880), (40, 4030106), (46, 3504440), (79, 2040560), (80, 2015053), (92, 1752220), (115, 1401776), (158, 1020280), (184, 876110), (230, 700888), (316, 510140), (368, 438055), (395, 408112), (460, 350444), (632, 255070), (790, 204056), (920, 175222), (1109, 145360), (1264, 127535), (1580, 102028), (1817, 88720), (1840, 87611), (2218, 72680), (3160, 51014), (3634, 44360), (4436, 36340), (5545, 29072), (6320, 25507), (7268, 22180), (8872, 18170), (9085, 17744), (11090, 14536)]