138474140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{13931}}^1$

素因数の和:14018

約数の個数: 48

約数和(自身を含む): 337042944

約数和(自身を除く): 198568804

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, 4970, 9940, 13931, 27862, 55724, 69655, 97517, 139310, 195034, 278620, 390068, 487585, 975170, 989101, 1950340, 1978202, 3956404, 4945505, 6923707, 9891010, 13847414, 19782020, 27694828, 34618535, 69237070, 138474140]

約数ペア:

[(1, 138474140), (2, 69237070), (4, 34618535), (5, 27694828), (7, 19782020), (10, 13847414), (14, 9891010), (20, 6923707), (28, 4945505), (35, 3956404), (70, 1978202), (71, 1950340), (140, 989101), (142, 975170), (284, 487585), (355, 390068), (497, 278620), (710, 195034), (994, 139310), (1420, 97517), (1988, 69655), (2485, 55724), (4970, 27862), (9940, 13931)]