20153985

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{433}}^1$

素因数の和:577

約数の個数: 32

約数和(自身を含む): 33747840

約数和(自身を除く): 13593855

約数列:

[1, 3, 5, 15, 29, 87, 107, 145, 321, 433, 435, 535, 1299, 1605, 2165, 3103, 6495, 9309, 12557, 15515, 37671, 46331, 46545, 62785, 138993, 188355, 231655, 694965, 1343599, 4030797, 6717995, 20153985]

約数ペア:

[(1, 20153985), (3, 6717995), (5, 4030797), (15, 1343599), (29, 694965), (87, 231655), (107, 188355), (145, 138993), (321, 62785), (433, 46545), (435, 46331), (535, 37671), (1299, 15515), (1605, 12557), (2165, 9309), (3103, 6495)]