18656340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1301}}^1$

素因数の和:1552

約数の個数: 48

約数和(自身を含む): 52496640

約数和(自身を除く): 33840300

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 239, 478, 717, 956, 1195, 1301, 1434, 2390, 2602, 2868, 3585, 3903, 4780, 5204, 6505, 7170, 7806, 13010, 14340, 15612, 19515, 26020, 39030, 78060, 310939, 621878, 932817, 1243756, 1554695, 1865634, 3109390, 3731268, 4664085, 6218780, 9328170, 18656340]

約数ペア:

[(1, 18656340), (2, 9328170), (3, 6218780), (4, 4664085), (5, 3731268), (6, 3109390), (10, 1865634), (12, 1554695), (15, 1243756), (20, 932817), (30, 621878), (60, 310939), (239, 78060), (478, 39030), (717, 26020), (956, 19515), (1195, 15612), (1301, 14340), (1434, 13010), (2390, 7806), (2602, 7170), (2868, 6505), (3585, 5204), (3903, 4780)]