19991115

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6257}}^1$

素因数の和:6339

約数の個数: 24

約数和(自身を含む): 35144928

約数和(自身を除く): 15153813

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 3195, 6257, 18771, 31285, 56313, 93855, 281565, 444247, 1332741, 2221235, 3998223, 6663705, 19991115]

約数ペア:

[(1, 19991115), (3, 6663705), (5, 3998223), (9, 2221235), (15, 1332741), (45, 444247), (71, 281565), (213, 93855), (355, 56313), (639, 31285), (1065, 18771), (3195, 6257)]