129608720

素因数分解:

$2^4\times 5^1\times {\mathrm{839}}^1\times {\mathrm{1931}}^1$

素因数の和:2783

約数の個数: 40

約数和(自身を含む): 301855680

約数和(自身を除く): 172246960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 839, 1678, 1931, 3356, 3862, 4195, 6712, 7724, 8390, 9655, 13424, 15448, 16780, 19310, 30896, 33560, 38620, 67120, 77240, 154480, 1620109, 3240218, 6480436, 8100545, 12960872, 16201090, 25921744, 32402180, 64804360, 129608720]

約数ペア:

[(1, 129608720), (2, 64804360), (4, 32402180), (5, 25921744), (8, 16201090), (10, 12960872), (16, 8100545), (20, 6480436), (40, 3240218), (80, 1620109), (839, 154480), (1678, 77240), (1931, 67120), (3356, 38620), (3862, 33560), (4195, 30896), (6712, 19310), (7724, 16780), (8390, 15448), (9655, 13424)]