389430860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{213973}}^1$

素因数の和:214002

約数の個数: 48

約数和(自身を含む): 1006533696

約数和(自身を除く): 617102836

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, 213973, 427946, 855892, 1069865, 1497811, 2139730, 2781649, 2995622, 4279460, 5563298, 5991244, 7489055, 11126596, 13908245, 14978110, 19471543, 27816490, 29956220, 38943086, 55632980, 77886172, 97357715, 194715430, 389430860]

約数ペア:

[(1, 389430860), (2, 194715430), (4, 97357715), (5, 77886172), (7, 55632980), (10, 38943086), (13, 29956220), (14, 27816490), (20, 19471543), (26, 14978110), (28, 13908245), (35, 11126596), (52, 7489055), (65, 5991244), (70, 5563298), (91, 4279460), (130, 2995622), (140, 2781649), (182, 2139730), (260, 1497811), (364, 1069865), (455, 855892), (910, 427946), (1820, 213973)]