31415671990

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{571}}^1\times {\mathrm{41999}}^1$

素因数の和:42708

約数の個数: 32

約数和(自身を含む): 57081024000

約数和(自身を除く): 25665352010

約数列:

[1, 2, 5, 10, 131, 262, 571, 655, 1142, 1310, 2855, 5710, 41999, 74801, 83998, 149602, 209995, 374005, 419990, 748010, 5501869, 11003738, 23981429, 27509345, 47962858, 55018690, 119907145, 239814290, 3141567199, 6283134398, 15707835995, 31415671990]

約数ペア:

[(1, 31415671990), (2, 15707835995), (5, 6283134398), (10, 3141567199), (131, 239814290), (262, 119907145), (571, 55018690), (655, 47962858), (1142, 27509345), (1310, 23981429), (2855, 11003738), (5710, 5501869), (41999, 748010), (74801, 419990), (83998, 374005), (149602, 209995)]