21000890

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{1033}}^1$

素因数の和:1166

約数の個数: 32

約数和(自身を含む): 40201920

約数和(自身を除く): 19201030

約数列:

[1, 2, 5, 10, 19, 38, 95, 107, 190, 214, 535, 1033, 1070, 2033, 2066, 4066, 5165, 10165, 10330, 19627, 20330, 39254, 98135, 110531, 196270, 221062, 552655, 1105310, 2100089, 4200178, 10500445, 21000890]

約数ペア:

[(1, 21000890), (2, 10500445), (5, 4200178), (10, 2100089), (19, 1105310), (38, 552655), (95, 221062), (107, 196270), (190, 110531), (214, 98135), (535, 39254), (1033, 20330), (1070, 19627), (2033, 10330), (2066, 10165), (4066, 5165)]