20615994

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1249}}^1$

素因数の和:1395

約数の個数: 48

約数和(自身を含む): 51480000

約数和(自身を除く): 30864006

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 131, 262, 393, 786, 917, 1179, 1249, 1834, 2358, 2498, 2751, 3747, 5502, 7494, 8253, 8743, 11241, 16506, 17486, 22482, 26229, 52458, 78687, 157374, 163619, 327238, 490857, 981714, 1145333, 1472571, 2290666, 2945142, 3435999, 6871998, 10307997, 20615994]

約数ペア:

[(1, 20615994), (2, 10307997), (3, 6871998), (6, 3435999), (7, 2945142), (9, 2290666), (14, 1472571), (18, 1145333), (21, 981714), (42, 490857), (63, 327238), (126, 163619), (131, 157374), (262, 78687), (393, 52458), (786, 26229), (917, 22482), (1179, 17486), (1249, 16506), (1834, 11241), (2358, 8743), (2498, 8253), (2751, 7494), (3747, 5502)]