21391736

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{86257}}^1$

素因数の和:86294

約数の個数: 16

約数和(自身を含む): 41403840

約数和(自身を除く): 20012104

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 86257, 172514, 345028, 690056, 2673967, 5347934, 10695868, 21391736]

約数ペア:

[(1, 21391736), (2, 10695868), (4, 5347934), (8, 2673967), (31, 690056), (62, 345028), (124, 172514), (248, 86257)]