19497205

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{587}}^1$

素因数の和:685

約数の個数: 32

約数和(自身を含む): 29240064

約数和(自身を除く): 9742859

約数列:

[1, 5, 7, 13, 35, 65, 73, 91, 365, 455, 511, 587, 949, 2555, 2935, 4109, 4745, 6643, 7631, 20545, 33215, 38155, 42851, 53417, 214255, 267085, 299957, 557063, 1499785, 2785315, 3899441, 19497205]

約数ペア:

[(1, 19497205), (5, 3899441), (7, 2785315), (13, 1499785), (35, 557063), (65, 299957), (73, 267085), (91, 214255), (365, 53417), (455, 42851), (511, 38155), (587, 33215), (949, 20545), (2555, 7631), (2935, 6643), (4109, 4745)]