18296620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{541}}^1$

素因数の和:658

約数の個数: 48

約数和(自身を含む): 40975200

約数和(自身を除く): 22678580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 89, 95, 178, 190, 356, 380, 445, 541, 890, 1082, 1691, 1780, 2164, 2705, 3382, 5410, 6764, 8455, 10279, 10820, 16910, 20558, 33820, 41116, 48149, 51395, 96298, 102790, 192596, 205580, 240745, 481490, 914831, 962980, 1829662, 3659324, 4574155, 9148310, 18296620]

約数ペア:

[(1, 18296620), (2, 9148310), (4, 4574155), (5, 3659324), (10, 1829662), (19, 962980), (20, 914831), (38, 481490), (76, 240745), (89, 205580), (95, 192596), (178, 102790), (190, 96298), (356, 51395), (380, 48149), (445, 41116), (541, 33820), (890, 20558), (1082, 16910), (1691, 10820), (1780, 10279), (2164, 8455), (2705, 6764), (3382, 5410)]