640876684

素因数分解:

$2^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{823}}^1$

素因数の和:1007

約数の個数: 72

約数和(自身を含む): 1361132640

約数和(自身を除く): 720255956

約数列:

[1, 2, 4, 7, 14, 28, 29, 49, 58, 98, 116, 137, 196, 203, 274, 406, 548, 812, 823, 959, 1421, 1646, 1918, 2842, 3292, 3836, 3973, 5684, 5761, 6713, 7946, 11522, 13426, 15892, 23044, 23867, 26852, 27811, 40327, 47734, 55622, 80654, 95468, 111244, 112751, 161308, 167069, 194677, 225502, 334138, 389354, 451004, 668276, 778708, 789257, 1169483, 1578514, 2338966, 3157028, 3269779, 4677932, 5524799, 6539558, 11049598, 13079116, 22099196, 22888453, 45776906, 91553812, 160219171, 320438342, 640876684]

約数ペア:

[(1, 640876684), (2, 320438342), (4, 160219171), (7, 91553812), (14, 45776906), (28, 22888453), (29, 22099196), (49, 13079116), (58, 11049598), (98, 6539558), (116, 5524799), (137, 4677932), (196, 3269779), (203, 3157028), (274, 2338966), (406, 1578514), (548, 1169483), (812, 789257), (823, 778708), (959, 668276), (1421, 451004), (1646, 389354), (1918, 334138), (2842, 225502), (3292, 194677), (3836, 167069), (3973, 161308), (5684, 112751), (5761, 111244), (6713, 95468), (7946, 80654), (11522, 55622), (13426, 47734), (15892, 40327), (23044, 27811), (23867, 26852)]