128168908

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{271}}^1$

素因数の和:435

約数の個数: 72

約数和(自身を含む): 277831680

約数和(自身を除く): 149662772

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 76, 98, 127, 133, 196, 254, 266, 271, 508, 532, 542, 889, 931, 1084, 1778, 1862, 1897, 2413, 3556, 3724, 3794, 4826, 5149, 6223, 7588, 9652, 10298, 12446, 13279, 16891, 20596, 24892, 26558, 33782, 34417, 36043, 53116, 67564, 68834, 72086, 118237, 137668, 144172, 236474, 240919, 252301, 472948, 481838, 504602, 653923, 963676, 1009204, 1307846, 1686433, 2615692, 3372866, 4577461, 6745732, 9154922, 18309844, 32042227, 64084454, 128168908]

約数ペア:

[(1, 128168908), (2, 64084454), (4, 32042227), (7, 18309844), (14, 9154922), (19, 6745732), (28, 4577461), (38, 3372866), (49, 2615692), (76, 1686433), (98, 1307846), (127, 1009204), (133, 963676), (196, 653923), (254, 504602), (266, 481838), (271, 472948), (508, 252301), (532, 240919), (542, 236474), (889, 144172), (931, 137668), (1084, 118237), (1778, 72086), (1862, 68834), (1897, 67564), (2413, 53116), (3556, 36043), (3724, 34417), (3794, 33782), (4826, 26558), (5149, 24892), (6223, 20596), (7588, 16891), (9652, 13279), (10298, 12446)]