278236475

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1$

素因数の和:201

約数の個数: 72

約数和(自身を含む): 411640320

約数和(自身を除く): 133403845

約数列:

[1, 5, 11, 19, 25, 47, 55, 95, 103, 121, 209, 235, 275, 475, 515, 517, 605, 893, 1045, 1133, 1175, 1957, 2299, 2575, 2585, 3025, 4465, 4841, 5225, 5665, 5687, 9785, 9823, 11495, 12463, 12925, 21527, 22325, 24205, 28325, 28435, 48925, 49115, 53251, 57475, 62315, 91979, 107635, 108053, 121025, 142175, 236797, 245575, 266255, 311575, 459895, 538175, 540265, 585761, 1011769, 1183985, 1331275, 2299475, 2701325, 2928805, 5058845, 5919925, 11129459, 14644025, 25294225, 55647295, 278236475]

約数ペア:

[(1, 278236475), (5, 55647295), (11, 25294225), (19, 14644025), (25, 11129459), (47, 5919925), (55, 5058845), (95, 2928805), (103, 2701325), (121, 2299475), (209, 1331275), (235, 1183985), (275, 1011769), (475, 585761), (515, 540265), (517, 538175), (605, 459895), (893, 311575), (1045, 266255), (1133, 245575), (1175, 236797), (1957, 142175), (2299, 121025), (2575, 108053), (2585, 107635), (3025, 91979), (4465, 62315), (4841, 57475), (5225, 53251), (5665, 49115), (5687, 48925), (9785, 28435), (9823, 28325), (11495, 24205), (12463, 22325), (12925, 21527)]