17928521780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{221723}}^1$

素因数の和:222056

約数の個数: 48

約数和(自身を含む): 40676598144

約数和(自身を除く): 22748076364

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 311, 622, 1244, 1555, 3110, 4043, 6220, 8086, 16172, 20215, 40430, 80860, 221723, 443446, 886892, 1108615, 2217230, 2882399, 4434460, 5764798, 11529596, 14411995, 28823990, 57647980, 68955853, 137911706, 275823412, 344779265, 689558530, 896426089, 1379117060, 1792852178, 3585704356, 4482130445, 8964260890, 17928521780]

約数ペア:

[(1, 17928521780), (2, 8964260890), (4, 4482130445), (5, 3585704356), (10, 1792852178), (13, 1379117060), (20, 896426089), (26, 689558530), (52, 344779265), (65, 275823412), (130, 137911706), (260, 68955853), (311, 57647980), (622, 28823990), (1244, 14411995), (1555, 11529596), (3110, 5764798), (4043, 4434460), (6220, 2882399), (8086, 2217230), (16172, 1108615), (20215, 886892), (40430, 443446), (80860, 221723)]