20349529880

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{3240371}}^1$

素因数の和:3240539

約数の個数: 32

約数和(自身を含む): 46078089840

約数和(自身を除く): 25728559960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 6280, 3240371, 6480742, 12961484, 16201855, 25922968, 32403710, 64807420, 129614840, 508738247, 1017476494, 2034952988, 2543691235, 4069905976, 5087382470, 10174764940, 20349529880]

約数ペア:

[(1, 20349529880), (2, 10174764940), (4, 5087382470), (5, 4069905976), (8, 2543691235), (10, 2034952988), (20, 1017476494), (40, 508738247), (157, 129614840), (314, 64807420), (628, 32403710), (785, 25922968), (1256, 16201855), (1570, 12961484), (3140, 6480742), (6280, 3240371)]