27428020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{811}}^1$

素因数の和:928

約数の個数: 48

約数和(自身を含む): 61387200

約数和(自身を除く): 33959180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 89, 95, 178, 190, 356, 380, 445, 811, 890, 1622, 1691, 1780, 3244, 3382, 4055, 6764, 8110, 8455, 15409, 16220, 16910, 30818, 33820, 61636, 72179, 77045, 144358, 154090, 288716, 308180, 360895, 721790, 1371401, 1443580, 2742802, 5485604, 6857005, 13714010, 27428020]

約数ペア:

[(1, 27428020), (2, 13714010), (4, 6857005), (5, 5485604), (10, 2742802), (19, 1443580), (20, 1371401), (38, 721790), (76, 360895), (89, 308180), (95, 288716), (178, 154090), (190, 144358), (356, 77045), (380, 72179), (445, 61636), (811, 33820), (890, 30818), (1622, 16910), (1691, 16220), (1780, 15409), (3244, 8455), (3382, 8110), (4055, 6764)]