21196305

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1907}}^1$

素因数の和:1950

約数の個数: 48

約数和(自身を含む): 41670720

約数和(自身を除く): 20474415

約数列:

[1, 3, 5, 9, 13, 15, 19, 39, 45, 57, 65, 95, 117, 171, 195, 247, 285, 585, 741, 855, 1235, 1907, 2223, 3705, 5721, 9535, 11115, 17163, 24791, 28605, 36233, 74373, 85815, 108699, 123955, 181165, 223119, 326097, 371865, 471029, 543495, 1115595, 1413087, 1630485, 2355145, 4239261, 7065435, 21196305]

約数ペア:

[(1, 21196305), (3, 7065435), (5, 4239261), (9, 2355145), (13, 1630485), (15, 1413087), (19, 1115595), (39, 543495), (45, 471029), (57, 371865), (65, 326097), (95, 223119), (117, 181165), (171, 123955), (195, 108699), (247, 85815), (285, 74373), (585, 36233), (741, 28605), (855, 24791), (1235, 17163), (1907, 11115), (2223, 9535), (3705, 5721)]