20921879878

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{89}}^2\times {\mathrm{30713}}^1$

素因数の和:30936

約数の個数: 24

約数和(自身を含む): 32478580728

約数和(自身を除く): 11556700850

約数列:

[1, 2, 43, 86, 89, 178, 3827, 7654, 7921, 15842, 30713, 61426, 340603, 681206, 1320659, 2641318, 2733457, 5466914, 117538651, 235077302, 243277673, 486555346, 10460939939, 20921879878]

約数ペア:

[(1, 20921879878), (2, 10460939939), (43, 486555346), (86, 243277673), (89, 235077302), (178, 117538651), (3827, 5466914), (7654, 2733457), (7921, 2641318), (15842, 1320659), (30713, 681206), (61426, 340603)]