20989122

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{251}}^1$

素因数の和:455

約数の個数: 64

約数和(自身を含む): 52835328

約数和(自身を除く): 31846206

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 77, 154, 181, 231, 251, 362, 462, 502, 543, 753, 1086, 1267, 1506, 1757, 1991, 2534, 2761, 3514, 3801, 3982, 5271, 5522, 5973, 7602, 8283, 10542, 11946, 13937, 16566, 19327, 27874, 38654, 41811, 45431, 57981, 83622, 90862, 115962, 136293, 272586, 318017, 499741, 636034, 954051, 999482, 1499223, 1908102, 2998446, 3498187, 6996374, 10494561, 20989122]

約数ペア:

[(1, 20989122), (2, 10494561), (3, 6996374), (6, 3498187), (7, 2998446), (11, 1908102), (14, 1499223), (21, 999482), (22, 954051), (33, 636034), (42, 499741), (66, 318017), (77, 272586), (154, 136293), (181, 115962), (231, 90862), (251, 83622), (362, 57981), (462, 45431), (502, 41811), (543, 38654), (753, 27874), (1086, 19327), (1267, 16566), (1506, 13937), (1757, 11946), (1991, 10542), (2534, 8283), (2761, 7602), (3514, 5973), (3801, 5522), (3982, 5271)]