2178750260

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^2\times {\mathrm{809}}^1$

素因数の和:1013

約数の個数: 72

約数和(自身を含む): 4905615960

約数和(自身を除く): 2726865700

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 89, 170, 178, 340, 356, 445, 809, 890, 1513, 1618, 1780, 3026, 3236, 4045, 6052, 7565, 7921, 8090, 13753, 15130, 15842, 16180, 27506, 30260, 31684, 39605, 55012, 68765, 72001, 79210, 134657, 137530, 144002, 158420, 269314, 275060, 288004, 360005, 538628, 673285, 720010, 1224017, 1346570, 1440020, 2448034, 2693140, 4896068, 6120085, 6408089, 12240170, 12816178, 24480340, 25632356, 32040445, 64080890, 108937513, 128161780, 217875026, 435750052, 544687565, 1089375130, 2178750260]

約数ペア:

[(1, 2178750260), (2, 1089375130), (4, 544687565), (5, 435750052), (10, 217875026), (17, 128161780), (20, 108937513), (34, 64080890), (68, 32040445), (85, 25632356), (89, 24480340), (170, 12816178), (178, 12240170), (340, 6408089), (356, 6120085), (445, 4896068), (809, 2693140), (890, 2448034), (1513, 1440020), (1618, 1346570), (1780, 1224017), (3026, 720010), (3236, 673285), (4045, 538628), (6052, 360005), (7565, 288004), (7921, 275060), (8090, 269314), (13753, 158420), (15130, 144002), (15842, 137530), (16180, 134657), (27506, 79210), (30260, 72001), (31684, 68765), (39605, 55012)]