21905156

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{8597}}^1$

素因数の和:8628

約数の個数: 36

約数和(自身を含む): 48028428

約数和(自身を除く): 26123272

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 182, 196, 364, 637, 1274, 2548, 8597, 17194, 34388, 60179, 111761, 120358, 223522, 240716, 421253, 447044, 782327, 842506, 1564654, 1685012, 3129308, 5476289, 10952578, 21905156]

約数ペア:

[(1, 21905156), (2, 10952578), (4, 5476289), (7, 3129308), (13, 1685012), (14, 1564654), (26, 842506), (28, 782327), (49, 447044), (52, 421253), (91, 240716), (98, 223522), (182, 120358), (196, 111761), (364, 60179), (637, 34388), (1274, 17194), (2548, 8597)]