21638558

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1\times {\mathrm{829}}^1$

素因数の和:1283

約数の個数: 16

約数和(自身を含む): 33624960

約数和(自身を除く): 11986402

約数列:

[1, 2, 31, 62, 421, 829, 842, 1658, 13051, 25699, 26102, 51398, 349009, 698018, 10819279, 21638558]

約数ペア:

[(1, 21638558), (2, 10819279), (31, 698018), (62, 349009), (421, 51398), (829, 26102), (842, 25699), (1658, 13051)]