128548840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{19961}}^1$

素因数の和:20002

約数の個数: 64

約数和(自身を含む): 344943360

約数和(自身を除く): 216394520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 6440, 19961, 39922, 79844, 99805, 139727, 159688, 199610, 279454, 399220, 459103, 558908, 698635, 798440, 918206, 1117816, 1397270, 1836412, 2295515, 2794540, 3213721, 3672824, 4591030, 5589080, 6427442, 9182060, 12854884, 16068605, 18364120, 25709768, 32137210, 64274420, 128548840]

約数ペア:

[(1, 128548840), (2, 64274420), (4, 32137210), (5, 25709768), (7, 18364120), (8, 16068605), (10, 12854884), (14, 9182060), (20, 6427442), (23, 5589080), (28, 4591030), (35, 3672824), (40, 3213721), (46, 2794540), (56, 2295515), (70, 1836412), (92, 1397270), (115, 1117816), (140, 918206), (161, 798440), (184, 698635), (230, 558908), (280, 459103), (322, 399220), (460, 279454), (644, 199610), (805, 159688), (920, 139727), (1288, 99805), (1610, 79844), (3220, 39922), (6440, 19961)]