28880840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{23291}}^1$

素因数の和:23333

約数の個数: 32

約数和(自身を含む): 67080960

約数和(自身を除く): 38200120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 23291, 46582, 93164, 116455, 186328, 232910, 465820, 722021, 931640, 1444042, 2888084, 3610105, 5776168, 7220210, 14440420, 28880840]

約数ペア:

[(1, 28880840), (2, 14440420), (4, 7220210), (5, 5776168), (8, 3610105), (10, 2888084), (20, 1444042), (31, 931640), (40, 722021), (62, 465820), (124, 232910), (155, 186328), (248, 116455), (310, 93164), (620, 46582), (1240, 23291)]