2019980840

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1\times {\mathrm{5273}}^1$

素因数の和:5502

約数の個数: 64

約数和(自身を含む): 4649769360

約数和(自身を除く): 2629788520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 157, 244, 305, 314, 488, 610, 628, 785, 1220, 1256, 1570, 2440, 3140, 5273, 6280, 9577, 10546, 19154, 21092, 26365, 38308, 42184, 47885, 52730, 76616, 95770, 105460, 191540, 210920, 321653, 383080, 643306, 827861, 1286612, 1608265, 1655722, 2573224, 3216530, 3311444, 4139305, 6433060, 6622888, 8278610, 12866120, 16557220, 33114440, 50499521, 100999042, 201998084, 252497605, 403996168, 504995210, 1009990420, 2019980840]

約数ペア:

[(1, 2019980840), (2, 1009990420), (4, 504995210), (5, 403996168), (8, 252497605), (10, 201998084), (20, 100999042), (40, 50499521), (61, 33114440), (122, 16557220), (157, 12866120), (244, 8278610), (305, 6622888), (314, 6433060), (488, 4139305), (610, 3311444), (628, 3216530), (785, 2573224), (1220, 1655722), (1256, 1608265), (1570, 1286612), (2440, 827861), (3140, 643306), (5273, 383080), (6280, 321653), (9577, 210920), (10546, 191540), (19154, 105460), (21092, 95770), (26365, 76616), (38308, 52730), (42184, 47885)]