53989820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1\times {\mathrm{197}}^1$

素因数の和:470

約数の個数: 48

約数和(自身を含む): 116157888

約数和(自身を除く): 62168068

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 193, 197, 284, 355, 386, 394, 710, 772, 788, 965, 985, 1420, 1930, 1970, 3860, 3940, 13703, 13987, 27406, 27974, 38021, 54812, 55948, 68515, 69935, 76042, 137030, 139870, 152084, 190105, 274060, 279740, 380210, 760420, 2699491, 5398982, 10797964, 13497455, 26994910, 53989820]

約数ペア:

[(1, 53989820), (2, 26994910), (4, 13497455), (5, 10797964), (10, 5398982), (20, 2699491), (71, 760420), (142, 380210), (193, 279740), (197, 274060), (284, 190105), (355, 152084), (386, 139870), (394, 137030), (710, 76042), (772, 69935), (788, 68515), (965, 55948), (985, 54812), (1420, 38021), (1930, 27974), (1970, 27406), (3860, 13987), (3940, 13703)]