21388895857

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{17807}}^1$

素因数の和:18001

約数の個数: 32

約数和(自身を含む): 25968337920

約数和(自身を除く): 4579442063

約数列:

[1, 7, 29, 61, 97, 203, 427, 679, 1769, 2813, 5917, 12383, 17807, 19691, 41419, 124649, 171593, 516403, 1086227, 1201151, 1727279, 3614821, 7603589, 12090953, 31500583, 50091091, 105364019, 220504081, 350637637, 737548133, 3055556551, 21388895857]

約数ペア:

[(1, 21388895857), (7, 3055556551), (29, 737548133), (61, 350637637), (97, 220504081), (203, 105364019), (427, 50091091), (679, 31500583), (1769, 12090953), (2813, 7603589), (5917, 3614821), (12383, 1727279), (17807, 1201151), (19691, 1086227), (41419, 516403), (124649, 171593)]