21158914

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{88903}}^1$

素因数の和:88929

約数の個数: 16

約数和(自身を含む): 38406528

約数和(自身を除く): 17247614

約数列:

[1, 2, 7, 14, 17, 34, 119, 238, 88903, 177806, 622321, 1244642, 1511351, 3022702, 10579457, 21158914]

約数ペア:

[(1, 21158914), (2, 10579457), (7, 3022702), (14, 1511351), (17, 1244642), (34, 622321), (119, 177806), (238, 88903)]