128905210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{821}}^1\times {\mathrm{2243}}^1$

素因数の和:3078

約数の個数: 32

約数和(自身を含む): 265617792

約数和(自身を除く): 136712582

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 821, 1642, 2243, 4105, 4486, 5747, 8210, 11215, 11494, 15701, 22430, 28735, 31402, 57470, 78505, 157010, 1841503, 3683006, 9207515, 12890521, 18415030, 25781042, 64452605, 128905210]

約数ペア:

[(1, 128905210), (2, 64452605), (5, 25781042), (7, 18415030), (10, 12890521), (14, 9207515), (35, 3683006), (70, 1841503), (821, 157010), (1642, 78505), (2243, 57470), (4105, 31402), (4486, 28735), (5747, 22430), (8210, 15701), (11215, 11494)]