21845005

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1171}}^1$

素因数の和:1237

約数の個数: 32

約数和(自身を含む): 33078528

約数和(自身を除く): 11233523

約数列:

[1, 5, 7, 13, 35, 41, 65, 91, 205, 287, 455, 533, 1171, 1435, 2665, 3731, 5855, 8197, 15223, 18655, 40985, 48011, 76115, 106561, 240055, 336077, 532805, 624143, 1680385, 3120715, 4369001, 21845005]

約数ペア:

[(1, 21845005), (5, 4369001), (7, 3120715), (13, 1680385), (35, 624143), (41, 532805), (65, 336077), (91, 240055), (205, 106561), (287, 76115), (455, 48011), (533, 40985), (1171, 18655), (1435, 15223), (2665, 8197), (3731, 5855)]