20721896

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{8663}}^1$

素因数の和:8705

約数の個数: 32

約数和(自身を含む): 43666560

約数和(自身を除く): 22944664

約数列:

[1, 2, 4, 8, 13, 23, 26, 46, 52, 92, 104, 184, 299, 598, 1196, 2392, 8663, 17326, 34652, 69304, 112619, 199249, 225238, 398498, 450476, 796996, 900952, 1593992, 2590237, 5180474, 10360948, 20721896]

約数ペア:

[(1, 20721896), (2, 10360948), (4, 5180474), (8, 2590237), (13, 1593992), (23, 900952), (26, 796996), (46, 450476), (52, 398498), (92, 225238), (104, 199249), (184, 112619), (299, 69304), (598, 34652), (1196, 17326), (2392, 8663)]