21378406

素因数分解:

$2^1\times 7^2\times {\mathrm{31}}^2\times {\mathrm{227}}^1$

素因数の和:305

約数の個数: 36

約数和(自身を含む): 38715084

約数和(自身を除く): 17336678

約数列:

[1, 2, 7, 14, 31, 49, 62, 98, 217, 227, 434, 454, 961, 1519, 1589, 1922, 3038, 3178, 6727, 7037, 11123, 13454, 14074, 22246, 47089, 49259, 94178, 98518, 218147, 344813, 436294, 689626, 1527029, 3054058, 10689203, 21378406]

約数ペア:

[(1, 21378406), (2, 10689203), (7, 3054058), (14, 1527029), (31, 689626), (49, 436294), (62, 344813), (98, 218147), (217, 98518), (227, 94178), (434, 49259), (454, 47089), (961, 22246), (1519, 14074), (1589, 13454), (1922, 11123), (3038, 7037), (3178, 6727)]