81214740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23747}}^1$

素因数の和:23781

約数の個数: 72

約数和(自身を含む): 259328160

約数和(自身を除く): 178113420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 23747, 47494, 71241, 94988, 118735, 142482, 213723, 237470, 284964, 356205, 427446, 451193, 474940, 712410, 854892, 902386, 1068615, 1353579, 1424820, 1804772, 2137230, 2255965, 2707158, 4060737, 4274460, 4511930, 5414316, 6767895, 8121474, 9023860, 13535790, 16242948, 20303685, 27071580, 40607370, 81214740]

約数ペア:

[(1, 81214740), (2, 40607370), (3, 27071580), (4, 20303685), (5, 16242948), (6, 13535790), (9, 9023860), (10, 8121474), (12, 6767895), (15, 5414316), (18, 4511930), (19, 4274460), (20, 4060737), (30, 2707158), (36, 2255965), (38, 2137230), (45, 1804772), (57, 1424820), (60, 1353579), (76, 1068615), (90, 902386), (95, 854892), (114, 712410), (171, 474940), (180, 451193), (190, 427446), (228, 356205), (285, 284964), (342, 237470), (380, 213723), (570, 142482), (684, 118735), (855, 94988), (1140, 71241), (1710, 47494), (3420, 23747)]