81015800

素因数分解:

$2^3\times 5^2\times {\mathrm{53}}^1\times {\mathrm{7643}}^1$

素因数の和:7712

約数の個数: 48

約数和(自身を含む): 191940840

約数和(自身を除く): 110925040

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 53, 100, 106, 200, 212, 265, 424, 530, 1060, 1325, 2120, 2650, 5300, 7643, 10600, 15286, 30572, 38215, 61144, 76430, 152860, 191075, 305720, 382150, 405079, 764300, 810158, 1528600, 1620316, 2025395, 3240632, 4050790, 8101580, 10126975, 16203160, 20253950, 40507900, 81015800]

約数ペア:

[(1, 81015800), (2, 40507900), (4, 20253950), (5, 16203160), (8, 10126975), (10, 8101580), (20, 4050790), (25, 3240632), (40, 2025395), (50, 1620316), (53, 1528600), (100, 810158), (106, 764300), (200, 405079), (212, 382150), (265, 305720), (424, 191075), (530, 152860), (1060, 76430), (1325, 61144), (2120, 38215), (2650, 30572), (5300, 15286), (7643, 10600)]