20505992

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^2$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 43115940

約数和(自身を除く): 22609948

約数列:

[1, 2, 4, 8, 13, 26, 37, 52, 73, 74, 104, 146, 148, 292, 296, 481, 584, 949, 962, 1898, 1924, 2701, 3796, 3848, 5329, 5402, 7592, 10658, 10804, 21316, 21608, 35113, 42632, 69277, 70226, 138554, 140452, 197173, 277108, 280904, 394346, 554216, 788692, 1577384, 2563249, 5126498, 10252996, 20505992]

約数ペア:

[(1, 20505992), (2, 10252996), (4, 5126498), (8, 2563249), (13, 1577384), (26, 788692), (37, 554216), (52, 394346), (73, 280904), (74, 277108), (104, 197173), (146, 140452), (148, 138554), (292, 70226), (296, 69277), (481, 42632), (584, 35113), (949, 21608), (962, 21316), (1898, 10804), (1924, 10658), (2701, 7592), (3796, 5402), (3848, 5329)]