21989394

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{19391}}^1$

素因数の和:19412

約数の個数: 40

約数和(自身を含む): 56314368

約数和(自身を除く): 34324974

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 126, 162, 189, 378, 567, 1134, 19391, 38782, 58173, 116346, 135737, 174519, 271474, 349038, 407211, 523557, 814422, 1047114, 1221633, 1570671, 2443266, 3141342, 3664899, 7329798, 10994697, 21989394]

約数ペア:

[(1, 21989394), (2, 10994697), (3, 7329798), (6, 3664899), (7, 3141342), (9, 2443266), (14, 1570671), (18, 1221633), (21, 1047114), (27, 814422), (42, 523557), (54, 407211), (63, 349038), (81, 271474), (126, 174519), (162, 135737), (189, 116346), (378, 58173), (567, 38782), (1134, 19391)]