78557680

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1229}}^1$

素因数の和:1306

約数の個数: 80

約数和(自身を含む): 197665920

約数和(自身を除く): 119108240

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 47, 68, 80, 85, 94, 136, 170, 188, 235, 272, 340, 376, 470, 680, 752, 799, 940, 1229, 1360, 1598, 1880, 2458, 3196, 3760, 3995, 4916, 6145, 6392, 7990, 9832, 12290, 12784, 15980, 19664, 20893, 24580, 31960, 41786, 49160, 57763, 63920, 83572, 98320, 104465, 115526, 167144, 208930, 231052, 288815, 334288, 417860, 462104, 577630, 835720, 924208, 981971, 1155260, 1671440, 1963942, 2310520, 3927884, 4621040, 4909855, 7855768, 9819710, 15711536, 19639420, 39278840, 78557680]

約数ペア:

[(1, 78557680), (2, 39278840), (4, 19639420), (5, 15711536), (8, 9819710), (10, 7855768), (16, 4909855), (17, 4621040), (20, 3927884), (34, 2310520), (40, 1963942), (47, 1671440), (68, 1155260), (80, 981971), (85, 924208), (94, 835720), (136, 577630), (170, 462104), (188, 417860), (235, 334288), (272, 288815), (340, 231052), (376, 208930), (470, 167144), (680, 115526), (752, 104465), (799, 98320), (940, 83572), (1229, 63920), (1360, 57763), (1598, 49160), (1880, 41786), (2458, 31960), (3196, 24580), (3760, 20893), (3995, 19664), (4916, 15980), (6145, 12784), (6392, 12290), (7990, 9832)]