18650723

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:136

約数の個数: 48

約数和(自身を含む): 26046720

約数和(自身を除く): 7395997

約数列:

[1, 7, 13, 19, 23, 49, 67, 91, 133, 161, 247, 299, 437, 469, 637, 871, 931, 1127, 1273, 1541, 1729, 2093, 3059, 3283, 5681, 6097, 8911, 10787, 12103, 14651, 16549, 20033, 21413, 29279, 39767, 42679, 62377, 75509, 115843, 140231, 204953, 278369, 380627, 810901, 981617, 1434671, 2664389, 18650723]

約数ペア:

[(1, 18650723), (7, 2664389), (13, 1434671), (19, 981617), (23, 810901), (49, 380627), (67, 278369), (91, 204953), (133, 140231), (161, 115843), (247, 75509), (299, 62377), (437, 42679), (469, 39767), (637, 29279), (871, 21413), (931, 20033), (1127, 16549), (1273, 14651), (1541, 12103), (1729, 10787), (2093, 8911), (3059, 6097), (3283, 5681)]