1279654580

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{71171}}^1$

素因数の和:71240

約数の個数: 48

約数和(自身を含む): 2869655040

約数和(自身を除く): 1590000460

約数列:

[1, 2, 4, 5, 10, 20, 29, 31, 58, 62, 116, 124, 145, 155, 290, 310, 580, 620, 899, 1798, 3596, 4495, 8990, 17980, 71171, 142342, 284684, 355855, 711710, 1423420, 2063959, 2206301, 4127918, 4412602, 8255836, 8825204, 10319795, 11031505, 20639590, 22063010, 41279180, 44126020, 63982729, 127965458, 255930916, 319913645, 639827290, 1279654580]

約数ペア:

[(1, 1279654580), (2, 639827290), (4, 319913645), (5, 255930916), (10, 127965458), (20, 63982729), (29, 44126020), (31, 41279180), (58, 22063010), (62, 20639590), (116, 11031505), (124, 10319795), (145, 8825204), (155, 8255836), (290, 4412602), (310, 4127918), (580, 2206301), (620, 2063959), (899, 1423420), (1798, 711710), (3596, 355855), (4495, 284684), (8990, 142342), (17980, 71171)]