18710744

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{557}}^1$

素因数の和:612

約数の個数: 64

約数和(自身を含む): 42184800

約数和(自身を除く): 23474056

約数列:

[1, 2, 4, 8, 13, 17, 19, 26, 34, 38, 52, 68, 76, 104, 136, 152, 221, 247, 323, 442, 494, 557, 646, 884, 988, 1114, 1292, 1768, 1976, 2228, 2584, 4199, 4456, 7241, 8398, 9469, 10583, 14482, 16796, 18938, 21166, 28964, 33592, 37876, 42332, 57928, 75752, 84664, 123097, 137579, 179911, 246194, 275158, 359822, 492388, 550316, 719644, 984776, 1100632, 1439288, 2338843, 4677686, 9355372, 18710744]

約数ペア:

[(1, 18710744), (2, 9355372), (4, 4677686), (8, 2338843), (13, 1439288), (17, 1100632), (19, 984776), (26, 719644), (34, 550316), (38, 492388), (52, 359822), (68, 275158), (76, 246194), (104, 179911), (136, 137579), (152, 123097), (221, 84664), (247, 75752), (323, 57928), (442, 42332), (494, 37876), (557, 33592), (646, 28964), (884, 21166), (988, 18938), (1114, 16796), (1292, 14482), (1768, 10583), (1976, 9469), (2228, 8398), (2584, 7241), (4199, 4456)]