19778115

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{379}}^1$

素因数の和:472

約数の個数: 48

約数和(自身を含む): 37428480

約数和(自身を除く): 17650365

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 71, 105, 147, 213, 245, 355, 379, 497, 735, 1065, 1137, 1491, 1895, 2485, 2653, 3479, 5685, 7455, 7959, 10437, 13265, 17395, 18571, 26909, 39795, 52185, 55713, 80727, 92855, 134545, 188363, 278565, 403635, 565089, 941815, 1318541, 2825445, 3955623, 6592705, 19778115]

約数ペア:

[(1, 19778115), (3, 6592705), (5, 3955623), (7, 2825445), (15, 1318541), (21, 941815), (35, 565089), (49, 403635), (71, 278565), (105, 188363), (147, 134545), (213, 92855), (245, 80727), (355, 55713), (379, 52185), (497, 39795), (735, 26909), (1065, 18571), (1137, 17395), (1491, 13265), (1895, 10437), (2485, 7959), (2653, 7455), (3479, 5685)]