1991197040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{347}}^1\times {\mathrm{10247}}^1$

素因数の和:10614

約数の個数: 80

約数和(自身を含む): 5306660352

約数和(自身を除く): 3315463312

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 347, 560, 694, 1388, 1735, 2429, 2776, 3470, 4858, 5552, 6940, 9716, 10247, 12145, 13880, 19432, 20494, 24290, 27760, 38864, 40988, 48580, 51235, 71729, 81976, 97160, 102470, 143458, 163952, 194320, 204940, 286916, 358645, 409880, 573832, 717290, 819760, 1147664, 1434580, 2869160, 3555709, 5738320, 7111418, 14222836, 17778545, 24889963, 28445672, 35557090, 49779926, 56891344, 71114180, 99559852, 124449815, 142228360, 199119704, 248899630, 284456720, 398239408, 497799260, 995598520, 1991197040]

約数ペア:

[(1, 1991197040), (2, 995598520), (4, 497799260), (5, 398239408), (7, 284456720), (8, 248899630), (10, 199119704), (14, 142228360), (16, 124449815), (20, 99559852), (28, 71114180), (35, 56891344), (40, 49779926), (56, 35557090), (70, 28445672), (80, 24889963), (112, 17778545), (140, 14222836), (280, 7111418), (347, 5738320), (560, 3555709), (694, 2869160), (1388, 1434580), (1735, 1147664), (2429, 819760), (2776, 717290), (3470, 573832), (4858, 409880), (5552, 358645), (6940, 286916), (9716, 204940), (10247, 194320), (12145, 163952), (13880, 143458), (19432, 102470), (20494, 97160), (24290, 81976), (27760, 71729), (38864, 51235), (40988, 48580)]