19706660

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{557}}^1$

素因数の和:656

約数の個数: 48

約数和(自身を含む): 43590960

約数和(自身を除く): 23884300

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 61, 116, 122, 145, 244, 290, 305, 557, 580, 610, 1114, 1220, 1769, 2228, 2785, 3538, 5570, 7076, 8845, 11140, 16153, 17690, 32306, 33977, 35380, 64612, 67954, 80765, 135908, 161530, 169885, 323060, 339770, 679540, 985333, 1970666, 3941332, 4926665, 9853330, 19706660]

約数ペア:

[(1, 19706660), (2, 9853330), (4, 4926665), (5, 3941332), (10, 1970666), (20, 985333), (29, 679540), (58, 339770), (61, 323060), (116, 169885), (122, 161530), (145, 135908), (244, 80765), (290, 67954), (305, 64612), (557, 35380), (580, 33977), (610, 32306), (1114, 17690), (1220, 16153), (1769, 11140), (2228, 8845), (2785, 7076), (3538, 5570)]