278370734

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1\times {\mathrm{389}}^1$

素因数の和:644

約数の個数: 32

約数和(自身を含む): 439227360

約数和(自身を除く): 160856626

約数列:

[1, 2, 43, 53, 86, 106, 157, 314, 389, 778, 2279, 4558, 6751, 8321, 13502, 16642, 16727, 20617, 33454, 41234, 61073, 122146, 357803, 715606, 886531, 1773062, 2626139, 3236869, 5252278, 6473738, 139185367, 278370734]

約数ペア:

[(1, 278370734), (2, 139185367), (43, 6473738), (53, 5252278), (86, 3236869), (106, 2626139), (157, 1773062), (314, 886531), (389, 715606), (778, 357803), (2279, 122146), (4558, 61073), (6751, 41234), (8321, 33454), (13502, 20617), (16642, 16727)]