20161540404

素因数分解:

$2^2\times 3^2\times {\mathrm{97}}^1\times {\mathrm{241}}^1\times {\mathrm{23957}}^1$

素因数の和:24305

約数の個数: 72

約数和(自身を含む): 51705101448

約数和(自身を除く): 31543561044

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 97, 194, 241, 291, 388, 482, 582, 723, 873, 964, 1164, 1446, 1746, 2169, 2892, 3492, 4338, 8676, 23377, 23957, 46754, 47914, 70131, 71871, 93508, 95828, 140262, 143742, 210393, 215613, 280524, 287484, 420786, 431226, 841572, 862452, 2323829, 4647658, 5773637, 6971487, 9295316, 11547274, 13942974, 17320911, 20914461, 23094548, 27885948, 34641822, 41828922, 51962733, 69283644, 83657844, 103925466, 207850932, 560042789, 1120085578, 1680128367, 2240171156, 3360256734, 5040385101, 6720513468, 10080770202, 20161540404]

約数ペア:

[(1, 20161540404), (2, 10080770202), (3, 6720513468), (4, 5040385101), (6, 3360256734), (9, 2240171156), (12, 1680128367), (18, 1120085578), (36, 560042789), (97, 207850932), (194, 103925466), (241, 83657844), (291, 69283644), (388, 51962733), (482, 41828922), (582, 34641822), (723, 27885948), (873, 23094548), (964, 20914461), (1164, 17320911), (1446, 13942974), (1746, 11547274), (2169, 9295316), (2892, 6971487), (3492, 5773637), (4338, 4647658), (8676, 2323829), (23377, 862452), (23957, 841572), (46754, 431226), (47914, 420786), (70131, 287484), (71871, 280524), (93508, 215613), (95828, 210393), (140262, 143742)]