90420820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{28081}}^1$

素因数の和:28120

約数の個数: 48

約数和(自身を含む): 226453248

約数和(自身を除く): 136032428

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 28081, 56162, 112324, 140405, 196567, 280810, 393134, 561620, 645863, 786268, 982835, 1291726, 1965670, 2583452, 3229315, 3931340, 4521041, 6458630, 9042082, 12917260, 18084164, 22605205, 45210410, 90420820]

約数ペア:

[(1, 90420820), (2, 45210410), (4, 22605205), (5, 18084164), (7, 12917260), (10, 9042082), (14, 6458630), (20, 4521041), (23, 3931340), (28, 3229315), (35, 2583452), (46, 1965670), (70, 1291726), (92, 982835), (115, 786268), (140, 645863), (161, 561620), (230, 393134), (322, 280810), (460, 196567), (644, 140405), (805, 112324), (1610, 56162), (3220, 28081)]