21025569084

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{140249}}^1$

素因数の和:140331

約数の個数: 72

約数和(自身を含む): 54593154000

約数和(自身を除く): 33567584916

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 31, 39, 52, 62, 78, 93, 124, 156, 186, 372, 403, 806, 961, 1209, 1612, 1922, 2418, 2883, 3844, 4836, 5766, 11532, 12493, 24986, 37479, 49972, 74958, 140249, 149916, 280498, 420747, 560996, 841494, 1682988, 1823237, 3646474, 4347719, 5469711, 7292948, 8695438, 10939422, 13043157, 17390876, 21878844, 26086314, 52172628, 56520347, 113040694, 134779289, 169561041, 226081388, 269558578, 339122082, 404337867, 539117156, 678244164, 808675734, 1617351468, 1752130757, 3504261514, 5256392271, 7008523028, 10512784542, 21025569084]

約数ペア:

[(1, 21025569084), (2, 10512784542), (3, 7008523028), (4, 5256392271), (6, 3504261514), (12, 1752130757), (13, 1617351468), (26, 808675734), (31, 678244164), (39, 539117156), (52, 404337867), (62, 339122082), (78, 269558578), (93, 226081388), (124, 169561041), (156, 134779289), (186, 113040694), (372, 56520347), (403, 52172628), (806, 26086314), (961, 21878844), (1209, 17390876), (1612, 13043157), (1922, 10939422), (2418, 8695438), (2883, 7292948), (3844, 5469711), (4836, 4347719), (5766, 3646474), (11532, 1823237), (12493, 1682988), (24986, 841494), (37479, 560996), (49972, 420747), (74958, 280498), (140249, 149916)]