21036743

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^3$

素因数の和:108

約数の個数: 32

約数和(自身を含む): 28492800

約数和(自身を除く): 7456057

約数列:

[1, 7, 13, 19, 23, 91, 133, 161, 247, 299, 437, 529, 1729, 2093, 3059, 3703, 5681, 6877, 10051, 12167, 39767, 48139, 70357, 85169, 130663, 158171, 231173, 914641, 1107197, 1618211, 3005249, 21036743]

約数ペア:

[(1, 21036743), (7, 3005249), (13, 1618211), (19, 1107197), (23, 914641), (91, 231173), (133, 158171), (161, 130663), (247, 85169), (299, 70357), (437, 48139), (529, 39767), (1729, 12167), (2093, 10051), (3059, 6877), (3703, 5681)]