21920433

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 32400000

約数和(自身を除く): 10479567

約数列:

[1, 3, 19, 29, 57, 87, 89, 149, 267, 447, 551, 1653, 1691, 2581, 2831, 4321, 5073, 7743, 8493, 12963, 13261, 39783, 49039, 82099, 147117, 246297, 251959, 384569, 755877, 1153707, 7306811, 21920433]

約数ペア:

[(1, 21920433), (3, 7306811), (19, 1153707), (29, 755877), (57, 384569), (87, 251959), (89, 246297), (149, 147117), (267, 82099), (447, 49039), (551, 39783), (1653, 13261), (1691, 12963), (2581, 8493), (2831, 7743), (4321, 5073)]