64821255

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{787}}^1$

素因数の和:848

約数の個数: 48

約数和(自身を含む): 116119680

約数和(自身を除く): 51298425

約数列:

[1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 289, 323, 787, 867, 969, 1445, 1615, 2361, 3935, 4335, 4845, 5491, 11805, 13379, 14953, 16473, 27455, 40137, 44859, 66895, 74765, 82365, 200685, 224295, 227443, 254201, 682329, 762603, 1137215, 1271005, 3411645, 3813015, 4321417, 12964251, 21607085, 64821255]

約数ペア:

[(1, 64821255), (3, 21607085), (5, 12964251), (15, 4321417), (17, 3813015), (19, 3411645), (51, 1271005), (57, 1137215), (85, 762603), (95, 682329), (255, 254201), (285, 227443), (289, 224295), (323, 200685), (787, 82365), (867, 74765), (969, 66895), (1445, 44859), (1615, 40137), (2361, 27455), (3935, 16473), (4335, 14953), (4845, 13379), (5491, 11805)]