778848980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{427939}}^1$

素因数の和:427968

約数の個数: 48

約数和(自身を含む): 2013029760

約数和(自身を除く): 1234180780

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 427939, 855878, 1711756, 2139695, 2995573, 4279390, 5563207, 5991146, 8558780, 11126414, 11982292, 14977865, 22252828, 27816035, 29955730, 38942449, 55632070, 59911460, 77884898, 111264140, 155769796, 194712245, 389424490, 778848980]

約数ペア:

[(1, 778848980), (2, 389424490), (4, 194712245), (5, 155769796), (7, 111264140), (10, 77884898), (13, 59911460), (14, 55632070), (20, 38942449), (26, 29955730), (28, 27816035), (35, 22252828), (52, 14977865), (65, 11982292), (70, 11126414), (91, 8558780), (130, 5991146), (140, 5563207), (182, 4279390), (260, 2995573), (364, 2139695), (455, 1711756), (910, 855878), (1820, 427939)]