13123915

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 20388672

約数和(自身を除く): 7264757

約数列:

[1, 5, 7, 17, 23, 35, 49, 85, 115, 119, 137, 161, 245, 391, 595, 685, 805, 833, 959, 1127, 1955, 2329, 2737, 3151, 4165, 4795, 5635, 6713, 11645, 13685, 15755, 16303, 19159, 22057, 33565, 53567, 81515, 95795, 110285, 114121, 154399, 267835, 374969, 570605, 771995, 1874845, 2624783, 13123915]

約数ペア:

[(1, 13123915), (5, 2624783), (7, 1874845), (17, 771995), (23, 570605), (35, 374969), (49, 267835), (85, 154399), (115, 114121), (119, 110285), (137, 95795), (161, 81515), (245, 53567), (391, 33565), (595, 22057), (685, 19159), (805, 16303), (833, 15755), (959, 13685), (1127, 11645), (1955, 6713), (2329, 5635), (2737, 4795), (3151, 4165)]