20442400

素因数分解:

$2^5\times 5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1$

素因数の和:155

約数の個数: 144

約数和(自身を含む): 57371328

約数和(自身を除く): 36928928

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 25, 32, 40, 44, 46, 50, 55, 80, 88, 92, 100, 101, 110, 115, 160, 176, 184, 200, 202, 220, 230, 253, 275, 352, 368, 400, 404, 440, 460, 505, 506, 550, 575, 736, 800, 808, 880, 920, 1010, 1012, 1100, 1111, 1150, 1265, 1616, 1760, 1840, 2020, 2024, 2200, 2222, 2300, 2323, 2525, 2530, 3232, 3680, 4040, 4048, 4400, 4444, 4600, 4646, 5050, 5060, 5555, 6325, 8080, 8096, 8800, 8888, 9200, 9292, 10100, 10120, 11110, 11615, 12650, 16160, 17776, 18400, 18584, 20200, 20240, 22220, 23230, 25300, 25553, 27775, 35552, 37168, 40400, 40480, 44440, 46460, 50600, 51106, 55550, 58075, 74336, 80800, 88880, 92920, 101200, 102212, 111100, 116150, 127765, 177760, 185840, 202400, 204424, 222200, 232300, 255530, 371680, 408848, 444400, 464600, 511060, 638825, 817696, 888800, 929200, 1022120, 1277650, 1858400, 2044240, 2555300, 4088480, 5110600, 10221200, 20442400]

約数ペア:

[(1, 20442400), (2, 10221200), (4, 5110600), (5, 4088480), (8, 2555300), (10, 2044240), (11, 1858400), (16, 1277650), (20, 1022120), (22, 929200), (23, 888800), (25, 817696), (32, 638825), (40, 511060), (44, 464600), (46, 444400), (50, 408848), (55, 371680), (80, 255530), (88, 232300), (92, 222200), (100, 204424), (101, 202400), (110, 185840), (115, 177760), (160, 127765), (176, 116150), (184, 111100), (200, 102212), (202, 101200), (220, 92920), (230, 88880), (253, 80800), (275, 74336), (352, 58075), (368, 55550), (400, 51106), (404, 50600), (440, 46460), (460, 44440), (505, 40480), (506, 40400), (550, 37168), (575, 35552), (736, 27775), (800, 25553), (808, 25300), (880, 23230), (920, 22220), (1010, 20240), (1012, 20200), (1100, 18584), (1111, 18400), (1150, 17776), (1265, 16160), (1616, 12650), (1760, 11615), (1840, 11110), (2020, 10120), (2024, 10100), (2200, 9292), (2222, 9200), (2300, 8888), (2323, 8800), (2525, 8096), (2530, 8080), (3232, 6325), (3680, 5555), (4040, 5060), (4048, 5050), (4400, 4646), (4444, 4600)]