20715547775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{491}}^1\times {\mathrm{3019}}^1$

素因数の和:3576

約数の個数: 48

約数和(自身を含む): 28373600640

約数和(自身を除く): 7658052865

約数列:

[1, 5, 13, 25, 43, 65, 215, 325, 491, 559, 1075, 2455, 2795, 3019, 6383, 12275, 13975, 15095, 21113, 31915, 39247, 75475, 105565, 129817, 159575, 196235, 274469, 527825, 649085, 981175, 1372345, 1482329, 1687621, 3245425, 6861725, 7411645, 8438105, 19270277, 37058225, 42190525, 63740147, 96351385, 318700735, 481756925, 828621911, 1593503675, 4143109555, 20715547775]

約数ペア:

[(1, 20715547775), (5, 4143109555), (13, 1593503675), (25, 828621911), (43, 481756925), (65, 318700735), (215, 96351385), (325, 63740147), (491, 42190525), (559, 37058225), (1075, 19270277), (2455, 8438105), (2795, 7411645), (3019, 6861725), (6383, 3245425), (12275, 1687621), (13975, 1482329), (15095, 1372345), (21113, 981175), (31915, 649085), (39247, 527825), (75475, 274469), (105565, 196235), (129817, 159575)]