18903404

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^3\times {\mathrm{53}}^1$

素因数の和:127

約数の個数: 48

約数和(自身を含む): 38314080

約数和(自身を除く): 19410676

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 53, 76, 106, 212, 247, 361, 494, 689, 722, 988, 1007, 1378, 1444, 2014, 2756, 4028, 4693, 6859, 9386, 13091, 13718, 18772, 19133, 26182, 27436, 38266, 52364, 76532, 89167, 178334, 248729, 356668, 363527, 497458, 727054, 994916, 1454108, 4725851, 9451702, 18903404]

約数ペア:

[(1, 18903404), (2, 9451702), (4, 4725851), (13, 1454108), (19, 994916), (26, 727054), (38, 497458), (52, 363527), (53, 356668), (76, 248729), (106, 178334), (212, 89167), (247, 76532), (361, 52364), (494, 38266), (689, 27436), (722, 26182), (988, 19133), (1007, 18772), (1378, 13718), (1444, 13091), (2014, 9386), (2756, 6859), (4028, 4693)]