31310020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{743}}^1$

素因数の和:809

約数の個数: 72

約数和(自身を含む): 78369984

約数和(自身を除く): 47059964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 49, 70, 86, 98, 140, 172, 196, 215, 245, 301, 430, 490, 602, 743, 860, 980, 1204, 1486, 1505, 2107, 2972, 3010, 3715, 4214, 5201, 6020, 7430, 8428, 10402, 10535, 14860, 20804, 21070, 26005, 31949, 36407, 42140, 52010, 63898, 72814, 104020, 127796, 145628, 159745, 182035, 223643, 319490, 364070, 447286, 638980, 728140, 894572, 1118215, 1565501, 2236430, 3131002, 4472860, 6262004, 7827505, 15655010, 31310020]

約数ペア:

[(1, 31310020), (2, 15655010), (4, 7827505), (5, 6262004), (7, 4472860), (10, 3131002), (14, 2236430), (20, 1565501), (28, 1118215), (35, 894572), (43, 728140), (49, 638980), (70, 447286), (86, 364070), (98, 319490), (140, 223643), (172, 182035), (196, 159745), (215, 145628), (245, 127796), (301, 104020), (430, 72814), (490, 63898), (602, 52010), (743, 42140), (860, 36407), (980, 31949), (1204, 26005), (1486, 21070), (1505, 20804), (2107, 14860), (2972, 10535), (3010, 10402), (3715, 8428), (4214, 7430), (5201, 6020)]