64288940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1\times {\mathrm{557}}^1$

素因数の和:794

約数の個数: 48

約数和(自身を含む): 140616000

約数和(自身を除く): 76327060

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 199, 290, 398, 557, 580, 796, 995, 1114, 1990, 2228, 2785, 3980, 5570, 5771, 11140, 11542, 16153, 23084, 28855, 32306, 57710, 64612, 80765, 110843, 115420, 161530, 221686, 323060, 443372, 554215, 1108430, 2216860, 3214447, 6428894, 12857788, 16072235, 32144470, 64288940]

約数ペア:

[(1, 64288940), (2, 32144470), (4, 16072235), (5, 12857788), (10, 6428894), (20, 3214447), (29, 2216860), (58, 1108430), (116, 554215), (145, 443372), (199, 323060), (290, 221686), (398, 161530), (557, 115420), (580, 110843), (796, 80765), (995, 64612), (1114, 57710), (1990, 32306), (2228, 28855), (2785, 23084), (3980, 16153), (5570, 11542), (5771, 11140)]