18862571

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 25038720

約数和(自身を除く): 6176149

約数列:

[1, 7, 13, 17, 89, 91, 119, 137, 221, 623, 959, 1157, 1513, 1547, 1781, 2329, 8099, 10591, 12193, 12467, 16303, 19669, 30277, 85351, 137683, 158509, 207281, 211939, 1109563, 1450967, 2694653, 18862571]

約数ペア:

[(1, 18862571), (7, 2694653), (13, 1450967), (17, 1109563), (89, 211939), (91, 207281), (119, 158509), (137, 137683), (221, 85351), (623, 30277), (959, 19669), (1157, 16303), (1513, 12467), (1547, 12193), (1781, 10591), (2329, 8099)]