20447940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20047}}^1$

素因数の和:20076

約数の個数: 48

約数和(自身を含む): 60625152

約数和(自身を除く): 40177212

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 20047, 40094, 60141, 80188, 100235, 120282, 200470, 240564, 300705, 340799, 400940, 601410, 681598, 1022397, 1202820, 1363196, 1703995, 2044794, 3407990, 4089588, 5111985, 6815980, 10223970, 20447940]

約数ペア:

[(1, 20447940), (2, 10223970), (3, 6815980), (4, 5111985), (5, 4089588), (6, 3407990), (10, 2044794), (12, 1703995), (15, 1363196), (17, 1202820), (20, 1022397), (30, 681598), (34, 601410), (51, 400940), (60, 340799), (68, 300705), (85, 240564), (102, 200470), (170, 120282), (204, 100235), (255, 80188), (340, 60141), (510, 40094), (1020, 20047)]