81893320

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1\times {\mathrm{313}}^1$

素因数の和:566

約数の個数: 64

約数和(自身を含む): 191715840

約数和(自身を除く): 109822520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 211, 248, 310, 313, 422, 620, 626, 844, 1055, 1240, 1252, 1565, 1688, 2110, 2504, 3130, 4220, 6260, 6541, 8440, 9703, 12520, 13082, 19406, 26164, 32705, 38812, 48515, 52328, 65410, 66043, 77624, 97030, 130820, 132086, 194060, 261640, 264172, 330215, 388120, 528344, 660430, 1320860, 2047333, 2641720, 4094666, 8189332, 10236665, 16378664, 20473330, 40946660, 81893320]

約数ペア:

[(1, 81893320), (2, 40946660), (4, 20473330), (5, 16378664), (8, 10236665), (10, 8189332), (20, 4094666), (31, 2641720), (40, 2047333), (62, 1320860), (124, 660430), (155, 528344), (211, 388120), (248, 330215), (310, 264172), (313, 261640), (422, 194060), (620, 132086), (626, 130820), (844, 97030), (1055, 77624), (1240, 66043), (1252, 65410), (1565, 52328), (1688, 48515), (2110, 38812), (2504, 32705), (3130, 26164), (4220, 19406), (6260, 13082), (6541, 12520), (8440, 9703)]