38878120

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{241}}^1$

素因数の和:398

約数の個数: 64

約数和(自身を含む): 91040400

約数和(自身を除く): 52162280

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 109, 148, 185, 218, 241, 296, 370, 436, 482, 545, 740, 872, 964, 1090, 1205, 1480, 1928, 2180, 2410, 4033, 4360, 4820, 8066, 8917, 9640, 16132, 17834, 20165, 26269, 32264, 35668, 40330, 44585, 52538, 71336, 80660, 89170, 105076, 131345, 161320, 178340, 210152, 262690, 356680, 525380, 971953, 1050760, 1943906, 3887812, 4859765, 7775624, 9719530, 19439060, 38878120]

約数ペア:

[(1, 38878120), (2, 19439060), (4, 9719530), (5, 7775624), (8, 4859765), (10, 3887812), (20, 1943906), (37, 1050760), (40, 971953), (74, 525380), (109, 356680), (148, 262690), (185, 210152), (218, 178340), (241, 161320), (296, 131345), (370, 105076), (436, 89170), (482, 80660), (545, 71336), (740, 52538), (872, 44585), (964, 40330), (1090, 35668), (1205, 32264), (1480, 26269), (1928, 20165), (2180, 17834), (2410, 16132), (4033, 9640), (4360, 8917), (4820, 8066)]