128741678

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{127}}^2\times {\mathrm{307}}^1$

素因数の和:576

約数の個数: 24

約数和(自身を含む): 210300552

約数和(自身を除く): 81558874

約数列:

[1, 2, 13, 26, 127, 254, 307, 614, 1651, 3302, 3991, 7982, 16129, 32258, 38989, 77978, 209677, 419354, 506857, 1013714, 4951603, 9903206, 64370839, 128741678]

約数ペア:

[(1, 128741678), (2, 64370839), (13, 9903206), (26, 4951603), (127, 1013714), (254, 506857), (307, 419354), (614, 209677), (1651, 77978), (3302, 38989), (3991, 32258), (7982, 16129)]