20790721329

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{52107071}}^1$

素因数の和:52107100

約数の個数: 16

約数和(自身を含む): 33348526080

約数和(自身を除く): 12557804751

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 52107071, 156321213, 364749497, 990034349, 1094248491, 2970103047, 6930240443, 20790721329]

約数ペア:

[(1, 20790721329), (3, 6930240443), (7, 2970103047), (19, 1094248491), (21, 990034349), (57, 364749497), (133, 156321213), (399, 52107071)]