21156142

素因数分解:

$2^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{3539}}^1$

素因数の和:3616

約数の個数: 24

約数和(自身を含む): 37531080

約数和(自身を除く): 16374938

約数列:

[1, 2, 7, 14, 49, 61, 98, 122, 427, 854, 2989, 3539, 5978, 7078, 24773, 49546, 173411, 215879, 346822, 431758, 1511153, 3022306, 10578071, 21156142]

約数ペア:

[(1, 21156142), (2, 10578071), (7, 3022306), (14, 1511153), (49, 431758), (61, 346822), (98, 215879), (122, 173411), (427, 49546), (854, 24773), (2989, 7078), (3539, 5978)]