20178507915

素因数分解:

$3^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{581597}}^1$

素因数の和:581868

約数の個数: 32

約数和(自身を含む): 36012548160

約数和(自身を除く): 15834040245

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 257, 771, 1285, 2313, 3855, 6939, 11565, 34695, 581597, 1744791, 2907985, 5234373, 8723955, 15703119, 26171865, 78515595, 149470429, 448411287, 747352145, 1345233861, 2242056435, 4035701583, 6726169305, 20178507915]

約数ペア:

[(1, 20178507915), (3, 6726169305), (5, 4035701583), (9, 2242056435), (15, 1345233861), (27, 747352145), (45, 448411287), (135, 149470429), (257, 78515595), (771, 26171865), (1285, 15703119), (2313, 8723955), (3855, 5234373), (6939, 2907985), (11565, 1744791), (34695, 581597)]