20780053570

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2141}}^1\times {\mathrm{2221}}^1$

素因数の和:4411

約数の個数: 64

約数和(自身を含む): 41122287360

約数和(自身を除く): 20342233790

約数列:

[1, 2, 5, 10, 19, 23, 38, 46, 95, 115, 190, 230, 437, 874, 2141, 2185, 2221, 4282, 4370, 4442, 10705, 11105, 21410, 22210, 40679, 42199, 49243, 51083, 81358, 84398, 98486, 102166, 203395, 210995, 246215, 255415, 406790, 421990, 492430, 510830, 935617, 970577, 1871234, 1941154, 4678085, 4755161, 4852885, 9356170, 9510322, 9705770, 23775805, 47551610, 90348059, 109368703, 180696118, 218737406, 451740295, 546843515, 903480590, 1093687030, 2078005357, 4156010714, 10390026785, 20780053570]

約数ペア:

[(1, 20780053570), (2, 10390026785), (5, 4156010714), (10, 2078005357), (19, 1093687030), (23, 903480590), (38, 546843515), (46, 451740295), (95, 218737406), (115, 180696118), (190, 109368703), (230, 90348059), (437, 47551610), (874, 23775805), (2141, 9705770), (2185, 9510322), (2221, 9356170), (4282, 4852885), (4370, 4755161), (4442, 4678085), (10705, 1941154), (11105, 1871234), (21410, 970577), (22210, 935617), (40679, 510830), (42199, 492430), (49243, 421990), (51083, 406790), (81358, 255415), (84398, 246215), (98486, 210995), (102166, 203395)]