1291218890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{359}}^1\times {\mathrm{379}}^1$

素因数の和:831

約数の個数: 64

約数和(自身を含む): 2551046400

約数和(自身を除く): 1259827510

約数列:

[1, 2, 5, 10, 13, 26, 65, 73, 130, 146, 359, 365, 379, 718, 730, 758, 949, 1795, 1895, 1898, 3590, 3790, 4667, 4745, 4927, 9334, 9490, 9854, 23335, 24635, 26207, 27667, 46670, 49270, 52414, 55334, 131035, 136061, 138335, 262070, 272122, 276670, 340691, 359671, 680305, 681382, 719342, 1360610, 1703455, 1768793, 1798355, 3406910, 3537586, 3596710, 8843965, 9932453, 17687930, 19864906, 49662265, 99324530, 129121889, 258243778, 645609445, 1291218890]

約数ペア:

[(1, 1291218890), (2, 645609445), (5, 258243778), (10, 129121889), (13, 99324530), (26, 49662265), (65, 19864906), (73, 17687930), (130, 9932453), (146, 8843965), (359, 3596710), (365, 3537586), (379, 3406910), (718, 1798355), (730, 1768793), (758, 1703455), (949, 1360610), (1795, 719342), (1895, 681382), (1898, 680305), (3590, 359671), (3790, 340691), (4667, 276670), (4745, 272122), (4927, 262070), (9334, 138335), (9490, 136061), (9854, 131035), (23335, 55334), (24635, 52414), (26207, 49270), (27667, 46670)]