18970315

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{241}}^1$

素因数の和:439

約数の個数: 32

約数和(自身を含む): 28296576

約数和(自身を除く): 9326261

約数列:

[1, 5, 7, 13, 35, 65, 91, 173, 241, 455, 865, 1205, 1211, 1687, 2249, 3133, 6055, 8435, 11245, 15665, 15743, 21931, 41693, 78715, 109655, 208465, 291851, 542009, 1459255, 2710045, 3794063, 18970315]

約数ペア:

[(1, 18970315), (5, 3794063), (7, 2710045), (13, 1459255), (35, 542009), (65, 291851), (91, 208465), (173, 109655), (241, 78715), (455, 41693), (865, 21931), (1205, 15743), (1211, 15665), (1687, 11245), (2249, 8435), (3133, 6055)]