81223870

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{311}}^1$

素因数の和:386

約数の個数: 96

約数和(自身を含む): 188225856

約数和(自身を除く): 107001986

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 41, 49, 65, 70, 82, 91, 98, 130, 182, 205, 245, 287, 311, 410, 455, 490, 533, 574, 622, 637, 910, 1066, 1274, 1435, 1555, 2009, 2177, 2665, 2870, 3110, 3185, 3731, 4018, 4043, 4354, 5330, 6370, 7462, 8086, 10045, 10885, 12751, 15239, 18655, 20090, 20215, 21770, 25502, 26117, 28301, 30478, 37310, 40430, 52234, 56602, 63755, 76195, 89257, 127510, 130585, 141505, 152390, 165763, 178514, 198107, 261170, 283010, 331526, 396214, 446285, 624799, 828815, 892570, 990535, 1160341, 1249598, 1657630, 1981070, 2320682, 3123995, 5801705, 6247990, 8122387, 11603410, 16244774, 40611935, 81223870]

約数ペア:

[(1, 81223870), (2, 40611935), (5, 16244774), (7, 11603410), (10, 8122387), (13, 6247990), (14, 5801705), (26, 3123995), (35, 2320682), (41, 1981070), (49, 1657630), (65, 1249598), (70, 1160341), (82, 990535), (91, 892570), (98, 828815), (130, 624799), (182, 446285), (205, 396214), (245, 331526), (287, 283010), (311, 261170), (410, 198107), (455, 178514), (490, 165763), (533, 152390), (574, 141505), (622, 130585), (637, 127510), (910, 89257), (1066, 76195), (1274, 63755), (1435, 56602), (1555, 52234), (2009, 40430), (2177, 37310), (2665, 30478), (2870, 28301), (3110, 26117), (3185, 25502), (3731, 21770), (4018, 20215), (4043, 20090), (4354, 18655), (5330, 15239), (6370, 12751), (7462, 10885), (8086, 10045)]