31619140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{3181}}^1$

素因数の和:3268

約数の個数: 48

約数和(自身を含む): 76978944

約数和(自身を除く): 45359804

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 3181, 4970, 6362, 9940, 12724, 15905, 22267, 31810, 44534, 63620, 89068, 111335, 222670, 225851, 445340, 451702, 903404, 1129255, 1580957, 2258510, 3161914, 4517020, 6323828, 7904785, 15809570, 31619140]

約数ペア:

[(1, 31619140), (2, 15809570), (4, 7904785), (5, 6323828), (7, 4517020), (10, 3161914), (14, 2258510), (20, 1580957), (28, 1129255), (35, 903404), (70, 451702), (71, 445340), (140, 225851), (142, 222670), (284, 111335), (355, 89068), (497, 63620), (710, 44534), (994, 31810), (1420, 22267), (1988, 15905), (2485, 12724), (3181, 9940), (4970, 6362)]