20921679

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2399}}^1$

素因数の和:2444

約数の個数: 32

約数和(自身を含む): 34560000

約数和(自身を除く): 13638321

約数列:

[1, 3, 9, 17, 19, 27, 51, 57, 153, 171, 323, 459, 513, 969, 2399, 2907, 7197, 8721, 21591, 40783, 45581, 64773, 122349, 136743, 367047, 410229, 774877, 1101141, 1230687, 2324631, 6973893, 20921679]

約数ペア:

[(1, 20921679), (3, 6973893), (9, 2324631), (17, 1230687), (19, 1101141), (27, 774877), (51, 410229), (57, 367047), (153, 136743), (171, 122349), (323, 64773), (459, 45581), (513, 40783), (969, 21591), (2399, 8721), (2907, 7197)]