18163964

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{359}}^1$

素因数の和:522

約数の個数: 48

約数和(自身を含む): 39513600

約数和(自身を除く): 21349636

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 139, 182, 278, 359, 364, 556, 718, 973, 1436, 1807, 1946, 2513, 3614, 3892, 4667, 5026, 7228, 9334, 10052, 12649, 18668, 25298, 32669, 49901, 50596, 65338, 99802, 130676, 199604, 349307, 648713, 698614, 1297426, 1397228, 2594852, 4540991, 9081982, 18163964]

約数ペア:

[(1, 18163964), (2, 9081982), (4, 4540991), (7, 2594852), (13, 1397228), (14, 1297426), (26, 698614), (28, 648713), (52, 349307), (91, 199604), (139, 130676), (182, 99802), (278, 65338), (359, 50596), (364, 49901), (556, 32669), (718, 25298), (973, 18668), (1436, 12649), (1807, 10052), (1946, 9334), (2513, 7228), (3614, 5026), (3892, 4667)]