16691990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{613}}^1$

素因数の和:1016

約数の個数: 32

約数和(自身を含む): 34482240

約数和(自身を除く): 17790250

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 389, 613, 778, 1226, 1945, 2723, 3065, 3890, 4291, 5446, 6130, 8582, 13615, 21455, 27230, 42910, 238457, 476914, 1192285, 1669199, 2384570, 3338398, 8345995, 16691990]

約数ペア:

[(1, 16691990), (2, 8345995), (5, 3338398), (7, 2384570), (10, 1669199), (14, 1192285), (35, 476914), (70, 238457), (389, 42910), (613, 27230), (778, 21455), (1226, 13615), (1945, 8582), (2723, 6130), (3065, 5446), (3890, 4291)]