28403172

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{269}}^1\times {\mathrm{419}}^1$

素因数の和:705

約数の個数: 72

約数和(自身を含む): 82555200

約数和(自身を除く): 54152028

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 269, 419, 538, 807, 838, 1076, 1257, 1614, 1676, 1883, 2421, 2514, 2933, 3228, 3766, 3771, 4842, 5028, 5649, 5866, 7532, 7542, 8799, 9684, 11298, 11732, 15084, 16947, 17598, 22596, 26397, 33894, 35196, 52794, 67788, 105588, 112711, 225422, 338133, 450844, 676266, 788977, 1014399, 1352532, 1577954, 2028798, 2366931, 3155908, 4057596, 4733862, 7100793, 9467724, 14201586, 28403172]

約数ペア:

[(1, 28403172), (2, 14201586), (3, 9467724), (4, 7100793), (6, 4733862), (7, 4057596), (9, 3155908), (12, 2366931), (14, 2028798), (18, 1577954), (21, 1352532), (28, 1014399), (36, 788977), (42, 676266), (63, 450844), (84, 338133), (126, 225422), (252, 112711), (269, 105588), (419, 67788), (538, 52794), (807, 35196), (838, 33894), (1076, 26397), (1257, 22596), (1614, 17598), (1676, 16947), (1883, 15084), (2421, 11732), (2514, 11298), (2933, 9684), (3228, 8799), (3766, 7542), (3771, 7532), (4842, 5866), (5028, 5649)]