21381276

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{769}}^1$

素因数の和:1114

約数の個数: 48

約数和(自身を含む): 57263360

約数和(自身を除く): 35882084

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 331, 662, 769, 993, 1324, 1538, 1986, 2307, 2317, 3076, 3972, 4614, 4634, 5383, 6951, 9228, 9268, 10766, 13902, 16149, 21532, 27804, 32298, 64596, 254539, 509078, 763617, 1018156, 1527234, 1781773, 3054468, 3563546, 5345319, 7127092, 10690638, 21381276]

約数ペア:

[(1, 21381276), (2, 10690638), (3, 7127092), (4, 5345319), (6, 3563546), (7, 3054468), (12, 1781773), (14, 1527234), (21, 1018156), (28, 763617), (42, 509078), (84, 254539), (331, 64596), (662, 32298), (769, 27804), (993, 21532), (1324, 16149), (1538, 13902), (1986, 10766), (2307, 9268), (2317, 9228), (3076, 6951), (3972, 5383), (4614, 4634)]