81435890

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{2473}}^1$

素因数の和:2606

約数の個数: 32

約数和(自身を含む): 152299440

約数和(自身を除く): 70863550

約数列:

[1, 2, 5, 10, 37, 74, 89, 178, 185, 370, 445, 890, 2473, 3293, 4946, 6586, 12365, 16465, 24730, 32930, 91501, 183002, 220097, 440194, 457505, 915010, 1100485, 2200970, 8143589, 16287178, 40717945, 81435890]

約数ペア:

[(1, 81435890), (2, 40717945), (5, 16287178), (10, 8143589), (37, 2200970), (74, 1100485), (89, 915010), (178, 457505), (185, 440194), (370, 220097), (445, 183002), (890, 91501), (2473, 32930), (3293, 24730), (4946, 16465), (6586, 12365)]