18531790

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{409}}^1$

素因数の和:636

約数の個数: 32

約数和(自身を含む): 35069760

約数和(自身を除く): 16537970

約数列:

[1, 2, 5, 10, 23, 46, 115, 197, 230, 394, 409, 818, 985, 1970, 2045, 4090, 4531, 9062, 9407, 18814, 22655, 45310, 47035, 80573, 94070, 161146, 402865, 805730, 1853179, 3706358, 9265895, 18531790]

約数ペア:

[(1, 18531790), (2, 9265895), (5, 3706358), (10, 1853179), (23, 805730), (46, 402865), (115, 161146), (197, 94070), (230, 80573), (394, 47035), (409, 45310), (818, 22655), (985, 18814), (1970, 9407), (2045, 9062), (4090, 4531)]