278174780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{34513}}^1$

素因数の和:34566

約数の個数: 48

約数和(自身を含む): 649415424

約数和(自身を除く): 371240644

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 34513, 69026, 138052, 172565, 345130, 448669, 690260, 897338, 1069903, 1794676, 2139806, 2243345, 4279612, 4486690, 5349515, 8973380, 10699030, 13908739, 21398060, 27817478, 55634956, 69543695, 139087390, 278174780]

約数ペア:

[(1, 278174780), (2, 139087390), (4, 69543695), (5, 55634956), (10, 27817478), (13, 21398060), (20, 13908739), (26, 10699030), (31, 8973380), (52, 5349515), (62, 4486690), (65, 4279612), (124, 2243345), (130, 2139806), (155, 1794676), (260, 1069903), (310, 897338), (403, 690260), (620, 448669), (806, 345130), (1612, 172565), (2015, 138052), (4030, 69026), (8060, 34513)]