28131156

素因数分解:

$2^2\times 3^2\times {\mathrm{67}}^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1$

素因数の和:293

約数の個数: 72

約数和(自身を含む): 73513440

約数和(自身を除く): 45382284

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 67, 107, 109, 134, 201, 214, 218, 268, 321, 327, 402, 428, 436, 603, 642, 654, 804, 963, 981, 1206, 1284, 1308, 1926, 1962, 2412, 3852, 3924, 7169, 7303, 11663, 14338, 14606, 21507, 21909, 23326, 28676, 29212, 34989, 43014, 43818, 46652, 64521, 65727, 69978, 86028, 87636, 104967, 129042, 131454, 139956, 209934, 258084, 262908, 419868, 781421, 1562842, 2344263, 3125684, 4688526, 7032789, 9377052, 14065578, 28131156]

約数ペア:

[(1, 28131156), (2, 14065578), (3, 9377052), (4, 7032789), (6, 4688526), (9, 3125684), (12, 2344263), (18, 1562842), (36, 781421), (67, 419868), (107, 262908), (109, 258084), (134, 209934), (201, 139956), (214, 131454), (218, 129042), (268, 104967), (321, 87636), (327, 86028), (402, 69978), (428, 65727), (436, 64521), (603, 46652), (642, 43818), (654, 43014), (804, 34989), (963, 29212), (981, 28676), (1206, 23326), (1284, 21909), (1308, 21507), (1926, 14606), (1962, 14338), (2412, 11663), (3852, 7303), (3924, 7169)]