21700648

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{167}}^1\times {\mathrm{439}}^1$

素因数の和:649

約数の個数: 32

約数和(自身を含む): 42134400

約数和(自身を除く): 20433752

約数列:

[1, 2, 4, 8, 37, 74, 148, 167, 296, 334, 439, 668, 878, 1336, 1756, 3512, 6179, 12358, 16243, 24716, 32486, 49432, 64972, 73313, 129944, 146626, 293252, 586504, 2712581, 5425162, 10850324, 21700648]

約数ペア:

[(1, 21700648), (2, 10850324), (4, 5425162), (8, 2712581), (37, 586504), (74, 293252), (148, 146626), (167, 129944), (296, 73313), (334, 64972), (439, 49432), (668, 32486), (878, 24716), (1336, 16243), (1756, 12358), (3512, 6179)]