64560140

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1\times {\mathrm{397}}^1$

素因数の和:626

約数の個数: 48

約数和(自身を含む): 139612032

約数和(自身を除く): 75051892

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 173, 188, 235, 346, 397, 470, 692, 794, 865, 940, 1588, 1730, 1985, 3460, 3970, 7940, 8131, 16262, 18659, 32524, 37318, 40655, 68681, 74636, 81310, 93295, 137362, 162620, 186590, 274724, 343405, 373180, 686810, 1373620, 3228007, 6456014, 12912028, 16140035, 32280070, 64560140]

約数ペア:

[(1, 64560140), (2, 32280070), (4, 16140035), (5, 12912028), (10, 6456014), (20, 3228007), (47, 1373620), (94, 686810), (173, 373180), (188, 343405), (235, 274724), (346, 186590), (397, 162620), (470, 137362), (692, 93295), (794, 81310), (865, 74636), (940, 68681), (1588, 40655), (1730, 37318), (1985, 32524), (3460, 18659), (3970, 16262), (7940, 8131)]