89420920

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{491}}^1$

素因数の和:688

約数の個数: 64

約数和(自身を含む): 209887200

約数和(自身を除く): 120466280

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 157, 232, 290, 314, 491, 580, 628, 785, 982, 1160, 1256, 1570, 1964, 2455, 3140, 3928, 4553, 4910, 6280, 9106, 9820, 14239, 18212, 19640, 22765, 28478, 36424, 45530, 56956, 71195, 77087, 91060, 113912, 142390, 154174, 182120, 284780, 308348, 385435, 569560, 616696, 770870, 1541740, 2235523, 3083480, 4471046, 8942092, 11177615, 17884184, 22355230, 44710460, 89420920]

約数ペア:

[(1, 89420920), (2, 44710460), (4, 22355230), (5, 17884184), (8, 11177615), (10, 8942092), (20, 4471046), (29, 3083480), (40, 2235523), (58, 1541740), (116, 770870), (145, 616696), (157, 569560), (232, 385435), (290, 308348), (314, 284780), (491, 182120), (580, 154174), (628, 142390), (785, 113912), (982, 91060), (1160, 77087), (1256, 71195), (1570, 56956), (1964, 45530), (2455, 36424), (3140, 28478), (3928, 22765), (4553, 19640), (4910, 18212), (6280, 14239), (9106, 9820)]