31468780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{163}}^1\times {\mathrm{197}}^1$

素因数の和:383

約数の個数: 72

約数和(自身を含む): 77737968

約数和(自身を除く): 46269188

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 163, 196, 197, 245, 326, 394, 490, 652, 788, 815, 980, 985, 1141, 1379, 1630, 1970, 2282, 2758, 3260, 3940, 4564, 5516, 5705, 6895, 7987, 9653, 11410, 13790, 15974, 19306, 22820, 27580, 31948, 32111, 38612, 39935, 48265, 64222, 79870, 96530, 128444, 159740, 160555, 193060, 224777, 321110, 449554, 642220, 899108, 1123885, 1573439, 2247770, 3146878, 4495540, 6293756, 7867195, 15734390, 31468780]

約数ペア:

[(1, 31468780), (2, 15734390), (4, 7867195), (5, 6293756), (7, 4495540), (10, 3146878), (14, 2247770), (20, 1573439), (28, 1123885), (35, 899108), (49, 642220), (70, 449554), (98, 321110), (140, 224777), (163, 193060), (196, 160555), (197, 159740), (245, 128444), (326, 96530), (394, 79870), (490, 64222), (652, 48265), (788, 39935), (815, 38612), (980, 32111), (985, 31948), (1141, 27580), (1379, 22820), (1630, 19306), (1970, 15974), (2282, 13790), (2758, 11410), (3260, 9653), (3940, 7987), (4564, 6895), (5516, 5705)]