77890820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{2053}}^1$

素因数の和:2340

約数の個数: 48

約数和(自身を含む): 187719168

約数和(自身を除く): 109828348

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 271, 542, 1084, 1355, 1897, 2053, 2710, 3794, 4106, 5420, 7588, 8212, 9485, 10265, 14371, 18970, 20530, 28742, 37940, 41060, 57484, 71855, 143710, 287420, 556363, 1112726, 2225452, 2781815, 3894541, 5563630, 7789082, 11127260, 15578164, 19472705, 38945410, 77890820]

約数ペア:

[(1, 77890820), (2, 38945410), (4, 19472705), (5, 15578164), (7, 11127260), (10, 7789082), (14, 5563630), (20, 3894541), (28, 2781815), (35, 2225452), (70, 1112726), (140, 556363), (271, 287420), (542, 143710), (1084, 71855), (1355, 57484), (1897, 41060), (2053, 37940), (2710, 28742), (3794, 20530), (4106, 18970), (5420, 14371), (7588, 10265), (8212, 9485)]