28785204

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1109}}^1$

素因数の和:1229

約数の個数: 72

約数和(自身を含む): 84040320

約数和(自身を除く): 55255116

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 103, 126, 206, 252, 309, 412, 618, 721, 927, 1109, 1236, 1442, 1854, 2163, 2218, 2884, 3327, 3708, 4326, 4436, 6489, 6654, 7763, 8652, 9981, 12978, 13308, 15526, 19962, 23289, 25956, 31052, 39924, 46578, 69867, 93156, 114227, 139734, 228454, 279468, 342681, 456908, 685362, 799589, 1028043, 1370724, 1599178, 2056086, 2398767, 3198356, 4112172, 4797534, 7196301, 9595068, 14392602, 28785204]

約数ペア:

[(1, 28785204), (2, 14392602), (3, 9595068), (4, 7196301), (6, 4797534), (7, 4112172), (9, 3198356), (12, 2398767), (14, 2056086), (18, 1599178), (21, 1370724), (28, 1028043), (36, 799589), (42, 685362), (63, 456908), (84, 342681), (103, 279468), (126, 228454), (206, 139734), (252, 114227), (309, 93156), (412, 69867), (618, 46578), (721, 39924), (927, 31052), (1109, 25956), (1236, 23289), (1442, 19962), (1854, 15526), (2163, 13308), (2218, 12978), (2884, 9981), (3327, 8652), (3708, 7763), (4326, 6654), (4436, 6489)]