77788760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{257}}^1$

素因数の和:345

約数の個数: 128

約数和(自身を含む): 213995520

約数和(自身を除く): 136206760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 47, 56, 70, 92, 94, 115, 140, 161, 184, 188, 230, 235, 257, 280, 322, 329, 376, 460, 470, 514, 644, 658, 805, 920, 940, 1028, 1081, 1285, 1288, 1316, 1610, 1645, 1799, 1880, 2056, 2162, 2570, 2632, 3220, 3290, 3598, 4324, 5140, 5405, 5911, 6440, 6580, 7196, 7567, 8648, 8995, 10280, 10810, 11822, 12079, 13160, 14392, 15134, 17990, 21620, 23644, 24158, 29555, 30268, 35980, 37835, 41377, 43240, 47288, 48316, 59110, 60395, 60536, 71960, 75670, 82754, 84553, 96632, 118220, 120790, 151340, 165508, 169106, 206885, 236440, 241580, 277817, 302680, 331016, 338212, 413770, 422765, 483160, 555634, 676424, 827540, 845530, 1111268, 1389085, 1655080, 1691060, 1944719, 2222536, 2778170, 3382120, 3889438, 5556340, 7778876, 9723595, 11112680, 15557752, 19447190, 38894380, 77788760]

約数ペア:

[(1, 77788760), (2, 38894380), (4, 19447190), (5, 15557752), (7, 11112680), (8, 9723595), (10, 7778876), (14, 5556340), (20, 3889438), (23, 3382120), (28, 2778170), (35, 2222536), (40, 1944719), (46, 1691060), (47, 1655080), (56, 1389085), (70, 1111268), (92, 845530), (94, 827540), (115, 676424), (140, 555634), (161, 483160), (184, 422765), (188, 413770), (230, 338212), (235, 331016), (257, 302680), (280, 277817), (322, 241580), (329, 236440), (376, 206885), (460, 169106), (470, 165508), (514, 151340), (644, 120790), (658, 118220), (805, 96632), (920, 84553), (940, 82754), (1028, 75670), (1081, 71960), (1285, 60536), (1288, 60395), (1316, 59110), (1610, 48316), (1645, 47288), (1799, 43240), (1880, 41377), (2056, 37835), (2162, 35980), (2570, 30268), (2632, 29555), (3220, 24158), (3290, 23644), (3598, 21620), (4324, 17990), (5140, 15134), (5405, 14392), (5911, 13160), (6440, 12079), (6580, 11822), (7196, 10810), (7567, 10280), (8648, 8995)]