21042272

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{653}}^1$

素因数の和:735

約数の個数: 48

約数和(自身を含む): 44498160

約数和(自身を除く): 23455888

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 53, 76, 106, 152, 212, 304, 424, 608, 653, 848, 1007, 1306, 1696, 2014, 2612, 4028, 5224, 8056, 10448, 12407, 16112, 20896, 24814, 32224, 34609, 49628, 69218, 99256, 138436, 198512, 276872, 397024, 553744, 657571, 1107488, 1315142, 2630284, 5260568, 10521136, 21042272]

約数ペア:

[(1, 21042272), (2, 10521136), (4, 5260568), (8, 2630284), (16, 1315142), (19, 1107488), (32, 657571), (38, 553744), (53, 397024), (76, 276872), (106, 198512), (152, 138436), (212, 99256), (304, 69218), (424, 49628), (608, 34609), (653, 32224), (848, 24814), (1007, 20896), (1306, 16112), (1696, 12407), (2014, 10448), (2612, 8056), (4028, 5224)]