20922447

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{443}}^1$

素因数の和:639

約数の個数: 32

約数和(自身を含む): 34610688

約数和(自身を除く): 13688241

約数列:

[1, 3, 7, 13, 21, 39, 91, 173, 273, 443, 519, 1211, 1329, 2249, 3101, 3633, 5759, 6747, 9303, 15743, 17277, 40313, 47229, 76639, 120939, 229917, 536473, 996307, 1609419, 2988921, 6974149, 20922447]

約数ペア:

[(1, 20922447), (3, 6974149), (7, 2988921), (13, 1609419), (21, 996307), (39, 536473), (91, 229917), (173, 120939), (273, 76639), (443, 47229), (519, 40313), (1211, 17277), (1329, 15743), (2249, 9303), (3101, 6747), (3633, 5759)]