21664448

素因数分解:

$2^6\times {\mathrm{13}}^2\times {\mathrm{2003}}^1$

素因数の和:2041

約数の個数: 42

約数和(自身を含む): 46574964

約数和(自身を除く): 24910516

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 169, 208, 338, 416, 676, 832, 1352, 2003, 2704, 4006, 5408, 8012, 10816, 16024, 26039, 32048, 52078, 64096, 104156, 128192, 208312, 338507, 416624, 677014, 833248, 1354028, 1666496, 2708056, 5416112, 10832224, 21664448]

約数ペア:

[(1, 21664448), (2, 10832224), (4, 5416112), (8, 2708056), (13, 1666496), (16, 1354028), (26, 833248), (32, 677014), (52, 416624), (64, 338507), (104, 208312), (169, 128192), (208, 104156), (338, 64096), (416, 52078), (676, 32048), (832, 26039), (1352, 16024), (2003, 10816), (2704, 8012), (4006, 5408)]