197380

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:219

約数の個数: 24

約数和(自身を含む): 423360

約数和(自身を除く): 225980

約数列:

[1, 2, 4, 5, 10, 20, 71, 139, 142, 278, 284, 355, 556, 695, 710, 1390, 1420, 2780, 9869, 19738, 39476, 49345, 98690, 197380]

約数ペア:

[(1, 197380), (2, 98690), (4, 49345), (5, 39476), (10, 19738), (20, 9869), (71, 2780), (139, 1420), (142, 1390), (278, 710), (284, 695), (355, 556)]