81416360

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{137}}^1\times {\mathrm{179}}^1$

素因数の和:410

約数の個数: 64

約数和(自身を含む): 187790400

約数和(自身を除く): 106374040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 137, 166, 179, 274, 332, 358, 415, 548, 664, 685, 716, 830, 895, 1096, 1370, 1432, 1660, 1790, 2740, 3320, 3580, 5480, 7160, 11371, 14857, 22742, 24523, 29714, 45484, 49046, 56855, 59428, 74285, 90968, 98092, 113710, 118856, 122615, 148570, 196184, 227420, 245230, 297140, 454840, 490460, 594280, 980920, 2035409, 4070818, 8141636, 10177045, 16283272, 20354090, 40708180, 81416360]

約数ペア:

[(1, 81416360), (2, 40708180), (4, 20354090), (5, 16283272), (8, 10177045), (10, 8141636), (20, 4070818), (40, 2035409), (83, 980920), (137, 594280), (166, 490460), (179, 454840), (274, 297140), (332, 245230), (358, 227420), (415, 196184), (548, 148570), (664, 122615), (685, 118856), (716, 113710), (830, 98092), (895, 90968), (1096, 74285), (1370, 59428), (1432, 56855), (1660, 49046), (1790, 45484), (2740, 29714), (3320, 24523), (3580, 22742), (5480, 14857), (7160, 11371)]