21907016

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{2039}}^1$

素因数の和:2141

約数の個数: 32

約数和(自身を含む): 44064000

約数和(自身を除く): 22156984

約数列:

[1, 2, 4, 8, 17, 34, 68, 79, 136, 158, 316, 632, 1343, 2039, 2686, 4078, 5372, 8156, 10744, 16312, 34663, 69326, 138652, 161081, 277304, 322162, 644324, 1288648, 2738377, 5476754, 10953508, 21907016]

約数ペア:

[(1, 21907016), (2, 10953508), (4, 5476754), (8, 2738377), (17, 1288648), (34, 644324), (68, 322162), (79, 277304), (136, 161081), (158, 138652), (316, 69326), (632, 34663), (1343, 16312), (2039, 10744), (2686, 8156), (4078, 5372)]