20654406

素因数分解:

$2^1\times 3^3\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{491}}^1$

素因数の和:562

約数の個数: 64

約数和(自身を含む): 49593600

約数和(自身を除く): 28939194

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 41, 54, 57, 82, 114, 123, 171, 246, 342, 369, 491, 513, 738, 779, 982, 1026, 1107, 1473, 1558, 2214, 2337, 2946, 4419, 4674, 7011, 8838, 9329, 13257, 14022, 18658, 20131, 21033, 26514, 27987, 40262, 42066, 55974, 60393, 83961, 120786, 167922, 181179, 251883, 362358, 382489, 503766, 543537, 764978, 1087074, 1147467, 2294934, 3442401, 6884802, 10327203, 20654406]

約数ペア:

[(1, 20654406), (2, 10327203), (3, 6884802), (6, 3442401), (9, 2294934), (18, 1147467), (19, 1087074), (27, 764978), (38, 543537), (41, 503766), (54, 382489), (57, 362358), (82, 251883), (114, 181179), (123, 167922), (171, 120786), (246, 83961), (342, 60393), (369, 55974), (491, 42066), (513, 40262), (738, 27987), (779, 26514), (982, 21033), (1026, 20131), (1107, 18658), (1473, 14022), (1558, 13257), (2214, 9329), (2337, 8838), (2946, 7011), (4419, 4674)]