21906745

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1\times {\mathrm{191}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 9611975

約数列:

[1, 5, 7, 29, 35, 113, 145, 191, 203, 565, 791, 955, 1015, 1337, 3277, 3955, 5539, 6685, 16385, 21583, 22939, 27695, 38773, 107915, 114695, 151081, 193865, 625907, 755405, 3129535, 4381349, 21906745]

約数ペア:

[(1, 21906745), (5, 4381349), (7, 3129535), (29, 755405), (35, 625907), (113, 193865), (145, 151081), (191, 114695), (203, 107915), (565, 38773), (791, 27695), (955, 22939), (1015, 21583), (1337, 16385), (3277, 6685), (3955, 5539)]