1999728718

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{457}}^1$

素因数の和:653

約数の個数: 64

約数和(自身を含む): 3434780160

約数和(自身を除く): 1435051442

約数列:

[1, 2, 13, 26, 31, 61, 62, 89, 122, 178, 403, 457, 793, 806, 914, 1157, 1586, 1891, 2314, 2759, 3782, 5429, 5518, 5941, 10858, 11882, 14167, 24583, 27877, 28334, 35867, 40673, 49166, 55754, 70577, 71734, 81346, 141154, 168299, 184171, 336598, 362401, 368342, 528749, 724802, 864187, 1057498, 1260863, 1728374, 2187887, 2481053, 2521726, 4375774, 4962106, 11234431, 16391219, 22468862, 32253689, 32782438, 64507378, 76912643, 153825286, 999864359, 1999728718]

約数ペア:

[(1, 1999728718), (2, 999864359), (13, 153825286), (26, 76912643), (31, 64507378), (61, 32782438), (62, 32253689), (89, 22468862), (122, 16391219), (178, 11234431), (403, 4962106), (457, 4375774), (793, 2521726), (806, 2481053), (914, 2187887), (1157, 1728374), (1586, 1260863), (1891, 1057498), (2314, 864187), (2759, 724802), (3782, 528749), (5429, 368342), (5518, 362401), (5941, 336598), (10858, 184171), (11882, 168299), (14167, 141154), (24583, 81346), (27877, 71734), (28334, 70577), (35867, 55754), (40673, 49166)]