218687980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{223151}}^1$

素因数の和:223174

約数の個数: 36

約数和(自身を含む): 534225888

約数和(自身を除く): 315537908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 223151, 446302, 892604, 1115755, 1562057, 2231510, 3124114, 4463020, 6248228, 7810285, 10934399, 15620570, 21868798, 31241140, 43737596, 54671995, 109343990, 218687980]

約数ペア:

[(1, 218687980), (2, 109343990), (4, 54671995), (5, 43737596), (7, 31241140), (10, 21868798), (14, 15620570), (20, 10934399), (28, 7810285), (35, 6248228), (49, 4463020), (70, 3124114), (98, 2231510), (140, 1562057), (196, 1115755), (245, 892604), (490, 446302), (980, 223151)]