21805654

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1193}}^1$

素因数の和:1264

約数の個数: 32

約数和(自身を含む): 38112480

約数和(自身を除く): 16306826

約数列:

[1, 2, 13, 19, 26, 37, 38, 74, 247, 481, 494, 703, 962, 1193, 1406, 2386, 9139, 15509, 18278, 22667, 31018, 44141, 45334, 88282, 294671, 573833, 589342, 838679, 1147666, 1677358, 10902827, 21805654]

約数ペア:

[(1, 21805654), (2, 10902827), (13, 1677358), (19, 1147666), (26, 838679), (37, 589342), (38, 573833), (74, 294671), (247, 88282), (481, 45334), (494, 44141), (703, 31018), (962, 22667), (1193, 18278), (1406, 15509), (2386, 9139)]