21163415

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{241}}^1$

素因数の和:459

約数の個数: 32

約数和(自身を含む): 31549056

約数和(自身を除く): 10385641

約数列:

[1, 5, 7, 13, 35, 65, 91, 193, 241, 455, 965, 1205, 1351, 1687, 2509, 3133, 6755, 8435, 12545, 15665, 17563, 21931, 46513, 87815, 109655, 232565, 325591, 604669, 1627955, 3023345, 4232683, 21163415]

約数ペア:

[(1, 21163415), (5, 4232683), (7, 3023345), (13, 1627955), (35, 604669), (65, 325591), (91, 232565), (193, 109655), (241, 87815), (455, 46513), (965, 21931), (1205, 17563), (1351, 15665), (1687, 12545), (2509, 8435), (3133, 6755)]