19958812

素因数分解:

$2^2\times {\mathrm{101}}^1\times {\mathrm{127}}^1\times {\mathrm{389}}^1$

素因数の和:621

約数の個数: 24

約数和(自身を含む): 35642880

約数和(自身を除く): 15684068

約数列:

[1, 2, 4, 101, 127, 202, 254, 389, 404, 508, 778, 1556, 12827, 25654, 39289, 49403, 51308, 78578, 98806, 157156, 197612, 4989703, 9979406, 19958812]

約数ペア:

[(1, 19958812), (2, 9979406), (4, 4989703), (101, 197612), (127, 157156), (202, 98806), (254, 78578), (389, 51308), (404, 49403), (508, 39289), (778, 25654), (1556, 12827)]