21131892

素因数分解:

$2^2\times 3^2\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1$

素因数の和:293

約数の個数: 72

約数和(自身を含む): 55648320

約数和(自身を除く): 34516428

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 41, 82, 103, 123, 139, 164, 206, 246, 278, 309, 369, 412, 417, 492, 556, 618, 738, 834, 927, 1236, 1251, 1476, 1668, 1854, 2502, 3708, 4223, 5004, 5699, 8446, 11398, 12669, 14317, 16892, 17097, 22796, 25338, 28634, 34194, 38007, 42951, 50676, 51291, 57268, 68388, 76014, 85902, 102582, 128853, 152028, 171804, 205164, 257706, 515412, 586997, 1173994, 1760991, 2347988, 3521982, 5282973, 7043964, 10565946, 21131892]

約数ペア:

[(1, 21131892), (2, 10565946), (3, 7043964), (4, 5282973), (6, 3521982), (9, 2347988), (12, 1760991), (18, 1173994), (36, 586997), (41, 515412), (82, 257706), (103, 205164), (123, 171804), (139, 152028), (164, 128853), (206, 102582), (246, 85902), (278, 76014), (309, 68388), (369, 57268), (412, 51291), (417, 50676), (492, 42951), (556, 38007), (618, 34194), (738, 28634), (834, 25338), (927, 22796), (1236, 17097), (1251, 16892), (1476, 14317), (1668, 12669), (1854, 11398), (2502, 8446), (3708, 5699), (4223, 5004)]