28438566

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:261

約数の個数: 64

約数和(自身を含む): 64162560

約数和(自身を除く): 35723994

約数列:

[1, 2, 3, 6, 13, 26, 39, 43, 61, 78, 86, 122, 129, 139, 183, 258, 278, 366, 417, 559, 793, 834, 1118, 1586, 1677, 1807, 2379, 2623, 3354, 3614, 4758, 5246, 5421, 5977, 7869, 8479, 10842, 11954, 15738, 16958, 17931, 25437, 34099, 35862, 50874, 68198, 77701, 102297, 110227, 155402, 204594, 220454, 233103, 330681, 364597, 466206, 661362, 729194, 1093791, 2187582, 4739761, 9479522, 14219283, 28438566]

約数ペア:

[(1, 28438566), (2, 14219283), (3, 9479522), (6, 4739761), (13, 2187582), (26, 1093791), (39, 729194), (43, 661362), (61, 466206), (78, 364597), (86, 330681), (122, 233103), (129, 220454), (139, 204594), (183, 155402), (258, 110227), (278, 102297), (366, 77701), (417, 68198), (559, 50874), (793, 35862), (834, 34099), (1118, 25437), (1586, 17931), (1677, 16958), (1807, 15738), (2379, 11954), (2623, 10842), (3354, 8479), (3614, 7869), (4758, 5977), (5246, 5421)]