428939140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{437693}}^1$

素因数の和:437716

約数の個数: 36

約数和(自身を含む): 1047839436

約数和(自身を除く): 618900296

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 437693, 875386, 1750772, 2188465, 3063851, 4376930, 6127702, 8753860, 12255404, 15319255, 21446957, 30638510, 42893914, 61277020, 85787828, 107234785, 214469570, 428939140]

約数ペア:

[(1, 428939140), (2, 214469570), (4, 107234785), (5, 85787828), (7, 61277020), (10, 42893914), (14, 30638510), (20, 21446957), (28, 15319255), (35, 12255404), (49, 8753860), (70, 6127702), (98, 4376930), (140, 3063851), (196, 2188465), (245, 1750772), (490, 875386), (980, 437693)]