720759920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{1783}}^1$

素因数の和:1990

約数の個数: 80

約数和(自身を含む): 1741412352

約数和(自身を除く): 1020652432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 163, 248, 310, 326, 496, 620, 652, 815, 1240, 1304, 1630, 1783, 2480, 2608, 3260, 3566, 5053, 6520, 7132, 8915, 10106, 13040, 14264, 17830, 20212, 25265, 28528, 35660, 40424, 50530, 55273, 71320, 80848, 101060, 110546, 142640, 202120, 221092, 276365, 290629, 404240, 442184, 552730, 581258, 884368, 1105460, 1162516, 1453145, 2210920, 2325032, 2906290, 4421840, 4650064, 5812580, 9009499, 11625160, 18018998, 23250320, 36037996, 45047495, 72075992, 90094990, 144151984, 180189980, 360379960, 720759920]

約数ペア:

[(1, 720759920), (2, 360379960), (4, 180189980), (5, 144151984), (8, 90094990), (10, 72075992), (16, 45047495), (20, 36037996), (31, 23250320), (40, 18018998), (62, 11625160), (80, 9009499), (124, 5812580), (155, 4650064), (163, 4421840), (248, 2906290), (310, 2325032), (326, 2210920), (496, 1453145), (620, 1162516), (652, 1105460), (815, 884368), (1240, 581258), (1304, 552730), (1630, 442184), (1783, 404240), (2480, 290629), (2608, 276365), (3260, 221092), (3566, 202120), (5053, 142640), (6520, 110546), (7132, 101060), (8915, 80848), (10106, 71320), (13040, 55273), (14264, 50530), (17830, 40424), (20212, 35660), (25265, 28528)]