21067137

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{887}}^1$

素因数の和:942

約数の個数: 48

約数和(自身を含む): 38787840

約数和(自身を除く): 17720703

約数列:

[1, 3, 7, 9, 13, 21, 29, 39, 63, 87, 91, 117, 203, 261, 273, 377, 609, 819, 887, 1131, 1827, 2639, 2661, 3393, 6209, 7917, 7983, 11531, 18627, 23751, 25723, 34593, 55881, 77169, 80717, 103779, 180061, 231507, 242151, 334399, 540183, 726453, 1003197, 1620549, 2340793, 3009591, 7022379, 21067137]

約数ペア:

[(1, 21067137), (3, 7022379), (7, 3009591), (9, 2340793), (13, 1620549), (21, 1003197), (29, 726453), (39, 540183), (63, 334399), (87, 242151), (91, 231507), (117, 180061), (203, 103779), (261, 80717), (273, 77169), (377, 55881), (609, 34593), (819, 25723), (887, 23751), (1131, 18627), (1827, 11531), (2639, 7983), (2661, 7917), (3393, 6209)]