661250768

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{127951}}^1$

素因数の和:127995

約数の個数: 40

約数和(自身を含む): 1427944320

約数和(自身を除く): 766693552

約数列:

[1, 2, 4, 8, 16, 17, 19, 34, 38, 68, 76, 136, 152, 272, 304, 323, 646, 1292, 2584, 5168, 127951, 255902, 511804, 1023608, 2047216, 2175167, 2431069, 4350334, 4862138, 8700668, 9724276, 17401336, 19448552, 34802672, 38897104, 41328173, 82656346, 165312692, 330625384, 661250768]

約数ペア:

[(1, 661250768), (2, 330625384), (4, 165312692), (8, 82656346), (16, 41328173), (17, 38897104), (19, 34802672), (34, 19448552), (38, 17401336), (68, 9724276), (76, 8700668), (136, 4862138), (152, 4350334), (272, 2431069), (304, 2175167), (323, 2047216), (646, 1023608), (1292, 511804), (2584, 255902), (5168, 127951)]