21082976

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{401}}^1$

素因数の和:495

約数の個数: 48

約数和(自身を含む): 43763328

約数和(自身を除く): 22680352

約数列:

[1, 2, 4, 8, 16, 31, 32, 53, 62, 106, 124, 212, 248, 401, 424, 496, 802, 848, 992, 1604, 1643, 1696, 3208, 3286, 6416, 6572, 12431, 12832, 13144, 21253, 24862, 26288, 42506, 49724, 52576, 85012, 99448, 170024, 198896, 340048, 397792, 658843, 680096, 1317686, 2635372, 5270744, 10541488, 21082976]

約数ペア:

[(1, 21082976), (2, 10541488), (4, 5270744), (8, 2635372), (16, 1317686), (31, 680096), (32, 658843), (53, 397792), (62, 340048), (106, 198896), (124, 170024), (212, 99448), (248, 85012), (401, 52576), (424, 49724), (496, 42506), (802, 26288), (848, 24862), (992, 21253), (1604, 13144), (1643, 12832), (1696, 12431), (3208, 6572), (3286, 6416)]