20915349

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3331}}^1$

素因数の和:3377

約数の個数: 32

約数和(自身を含む): 35825664

約数和(自身を除く): 14910315

約数列:

[1, 3, 7, 13, 21, 23, 39, 69, 91, 161, 273, 299, 483, 897, 2093, 3331, 6279, 9993, 23317, 43303, 69951, 76613, 129909, 229839, 303121, 536291, 909363, 995969, 1608873, 2987907, 6971783, 20915349]

約数ペア:

[(1, 20915349), (3, 6971783), (7, 2987907), (13, 1608873), (21, 995969), (23, 909363), (39, 536291), (69, 303121), (91, 229839), (161, 129909), (273, 76613), (299, 69951), (483, 43303), (897, 23317), (2093, 9993), (3331, 6279)]