19871655

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1\times {\mathrm{241}}^1$

素因数の和:511

約数の個数: 32

約数和(自身を含む): 33454080

約数和(自身を除く): 13582425

約数列:

[1, 3, 5, 15, 23, 69, 115, 239, 241, 345, 717, 723, 1195, 1205, 3585, 3615, 5497, 5543, 16491, 16629, 27485, 27715, 57599, 82455, 83145, 172797, 287995, 863985, 1324777, 3974331, 6623885, 19871655]

約数ペア:

[(1, 19871655), (3, 6623885), (5, 3974331), (15, 1324777), (23, 863985), (69, 287995), (115, 172797), (239, 83145), (241, 82455), (345, 57599), (717, 27715), (723, 27485), (1195, 16629), (1205, 16491), (3585, 5543), (3615, 5497)]