1640781640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{269}}^1\times {\mathrm{4919}}^1$

素因数の和:5230

約数の個数: 64

約数和(自身を含む): 3825792000

約数和(自身を除く): 2185010360

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 269, 310, 538, 620, 1076, 1240, 1345, 2152, 2690, 4919, 5380, 8339, 9838, 10760, 16678, 19676, 24595, 33356, 39352, 41695, 49190, 66712, 83390, 98380, 152489, 166780, 196760, 304978, 333560, 609956, 762445, 1219912, 1323211, 1524890, 2646422, 3049780, 5292844, 6099560, 6616055, 10585688, 13232110, 26464220, 41019541, 52928440, 82039082, 164078164, 205097705, 328156328, 410195410, 820390820, 1640781640]

約数ペア:

[(1, 1640781640), (2, 820390820), (4, 410195410), (5, 328156328), (8, 205097705), (10, 164078164), (20, 82039082), (31, 52928440), (40, 41019541), (62, 26464220), (124, 13232110), (155, 10585688), (248, 6616055), (269, 6099560), (310, 5292844), (538, 3049780), (620, 2646422), (1076, 1524890), (1240, 1323211), (1345, 1219912), (2152, 762445), (2690, 609956), (4919, 333560), (5380, 304978), (8339, 196760), (9838, 166780), (10760, 152489), (16678, 98380), (19676, 83390), (24595, 66712), (33356, 49190), (39352, 41695)]