21789949820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{673}}^1\times {\mathrm{55823}}^1$

素因数の和:56534

約数の個数: 48

約数和(自身を含む): 47407973760

約数和(自身を除く): 25618023940

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 673, 1346, 2692, 3365, 6730, 13460, 19517, 39034, 55823, 78068, 97585, 111646, 195170, 223292, 279115, 390340, 558230, 1116460, 1618867, 3237734, 6475468, 8094335, 16188670, 32377340, 37568879, 75137758, 150275516, 187844395, 375688790, 751377580, 1089497491, 2178994982, 4357989964, 5447487455, 10894974910, 21789949820]

約数ペア:

[(1, 21789949820), (2, 10894974910), (4, 5447487455), (5, 4357989964), (10, 2178994982), (20, 1089497491), (29, 751377580), (58, 375688790), (116, 187844395), (145, 150275516), (290, 75137758), (580, 37568879), (673, 32377340), (1346, 16188670), (2692, 8094335), (3365, 6475468), (6730, 3237734), (13460, 1618867), (19517, 1116460), (39034, 558230), (55823, 390340), (78068, 279115), (97585, 223292), (111646, 195170)]