19993671

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{467}}^1$

素因数の和:611

約数の個数: 24

約数和(自身を含む): 29787264

約数和(自身を除く): 9793593

約数列:

[1, 3, 9, 67, 71, 201, 213, 467, 603, 639, 1401, 4203, 4757, 14271, 31289, 33157, 42813, 93867, 99471, 281601, 298413, 2221519, 6664557, 19993671]

約数ペア:

[(1, 19993671), (3, 6664557), (9, 2221519), (67, 298413), (71, 281601), (201, 99471), (213, 93867), (467, 42813), (603, 33157), (639, 31289), (1401, 14271), (4203, 4757)]