20121550839

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{107}}^1\times {\mathrm{123637}}^1$

素因数の和:123776

約数の個数: 36

約数和(自身を含む): 31766558616

約数和(自身を除く): 11645007777

約数列:

[1, 3, 9, 13, 39, 107, 117, 169, 321, 507, 963, 1391, 1521, 4173, 12519, 18083, 54249, 123637, 162747, 370911, 1112733, 1607281, 4821843, 13229159, 14465529, 20894653, 39687477, 62683959, 119062431, 171979067, 188051877, 515937201, 1547811603, 2235727871, 6707183613, 20121550839]

約数ペア:

[(1, 20121550839), (3, 6707183613), (9, 2235727871), (13, 1547811603), (39, 515937201), (107, 188051877), (117, 171979067), (169, 119062431), (321, 62683959), (507, 39687477), (963, 20894653), (1391, 14465529), (1521, 13229159), (4173, 4821843), (12519, 1607281), (18083, 1112733), (54249, 370911), (123637, 162747)]