21342783

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{197}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 36837504

約数和(自身を除く): 15494721

約数列:

[1, 3, 7, 11, 21, 33, 49, 67, 77, 147, 197, 201, 231, 469, 539, 591, 737, 1379, 1407, 1617, 2167, 2211, 3283, 4137, 5159, 6501, 9653, 9849, 13199, 15169, 15477, 28959, 36113, 39597, 45507, 92393, 106183, 108339, 145189, 277179, 318549, 435567, 646751, 1016323, 1940253, 3048969, 7114261, 21342783]

約数ペア:

[(1, 21342783), (3, 7114261), (7, 3048969), (11, 1940253), (21, 1016323), (33, 646751), (49, 435567), (67, 318549), (77, 277179), (147, 145189), (197, 108339), (201, 106183), (231, 92393), (469, 45507), (539, 39597), (591, 36113), (737, 28959), (1379, 15477), (1407, 15169), (1617, 13199), (2167, 9849), (2211, 9653), (3283, 6501), (4137, 5159)]