19891550

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{353}}^1$

素因数の和:402

約数の個数: 72

約数和(自身を含む): 45037296

約数和(自身を除く): 25145746

約数列:

[1, 2, 5, 7, 10, 14, 23, 25, 35, 46, 49, 50, 70, 98, 115, 161, 175, 230, 245, 322, 350, 353, 490, 575, 706, 805, 1127, 1150, 1225, 1610, 1765, 2254, 2450, 2471, 3530, 4025, 4942, 5635, 8050, 8119, 8825, 11270, 12355, 16238, 17297, 17650, 24710, 28175, 34594, 40595, 56350, 56833, 61775, 81190, 86485, 113666, 123550, 172970, 202975, 284165, 397831, 405950, 432425, 568330, 795662, 864850, 1420825, 1989155, 2841650, 3978310, 9945775, 19891550]

約数ペア:

[(1, 19891550), (2, 9945775), (5, 3978310), (7, 2841650), (10, 1989155), (14, 1420825), (23, 864850), (25, 795662), (35, 568330), (46, 432425), (49, 405950), (50, 397831), (70, 284165), (98, 202975), (115, 172970), (161, 123550), (175, 113666), (230, 86485), (245, 81190), (322, 61775), (350, 56833), (353, 56350), (490, 40595), (575, 34594), (706, 28175), (805, 24710), (1127, 17650), (1150, 17297), (1225, 16238), (1610, 12355), (1765, 11270), (2254, 8825), (2450, 8119), (2471, 8050), (3530, 5635), (4025, 4942)]