13218205

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1$

素因数の和:194

約数の個数: 64

約数和(自身を含む): 22579200

約数和(自身を除く): 9360995

約数列:

[1, 5, 7, 11, 13, 19, 35, 55, 65, 77, 91, 95, 133, 139, 143, 209, 247, 385, 455, 665, 695, 715, 973, 1001, 1045, 1235, 1463, 1529, 1729, 1807, 2641, 2717, 4865, 5005, 7315, 7645, 8645, 9035, 10703, 12649, 13205, 13585, 18487, 19019, 19877, 29051, 34333, 53515, 63245, 92435, 95095, 99385, 139139, 145255, 171665, 203357, 240331, 377663, 695695, 1016785, 1201655, 1888315, 2643641, 13218205]

約数ペア:

[(1, 13218205), (5, 2643641), (7, 1888315), (11, 1201655), (13, 1016785), (19, 695695), (35, 377663), (55, 240331), (65, 203357), (77, 171665), (91, 145255), (95, 139139), (133, 99385), (139, 95095), (143, 92435), (209, 63245), (247, 53515), (385, 34333), (455, 29051), (665, 19877), (695, 19019), (715, 18487), (973, 13585), (1001, 13205), (1045, 12649), (1235, 10703), (1463, 9035), (1529, 8645), (1729, 7645), (1807, 7315), (2641, 5005), (2717, 4865)]