20405424

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{617}}^1$

素因数の和:694

約数の個数: 80

約数和(自身を含む): 57933792

約数和(自身を除く): 37528368

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 53, 78, 104, 106, 156, 159, 208, 212, 312, 318, 424, 617, 624, 636, 689, 848, 1234, 1272, 1378, 1851, 2067, 2468, 2544, 2756, 3702, 4134, 4936, 5512, 7404, 8021, 8268, 9872, 11024, 14808, 16042, 16536, 24063, 29616, 32084, 32701, 33072, 48126, 64168, 65402, 96252, 98103, 128336, 130804, 192504, 196206, 261608, 385008, 392412, 425113, 523216, 784824, 850226, 1275339, 1569648, 1700452, 2550678, 3400904, 5101356, 6801808, 10202712, 20405424]

約数ペア:

[(1, 20405424), (2, 10202712), (3, 6801808), (4, 5101356), (6, 3400904), (8, 2550678), (12, 1700452), (13, 1569648), (16, 1275339), (24, 850226), (26, 784824), (39, 523216), (48, 425113), (52, 392412), (53, 385008), (78, 261608), (104, 196206), (106, 192504), (156, 130804), (159, 128336), (208, 98103), (212, 96252), (312, 65402), (318, 64168), (424, 48126), (617, 33072), (624, 32701), (636, 32084), (689, 29616), (848, 24063), (1234, 16536), (1272, 16042), (1378, 14808), (1851, 11024), (2067, 9872), (2468, 8268), (2544, 8021), (2756, 7404), (3702, 5512), (4134, 4936)]