254237907

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{641}}^1$

素因数の和:780

約数の個数: 64

約数和(自身を含む): 452625408

約数和(自身を除く): 198387501

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 101, 119, 187, 231, 303, 357, 561, 641, 707, 1111, 1309, 1717, 1923, 2121, 3333, 3927, 4487, 5151, 7051, 7777, 10897, 12019, 13461, 18887, 21153, 23331, 32691, 36057, 49357, 56661, 64741, 76279, 119867, 132209, 148071, 194223, 228837, 359601, 396627, 453187, 712151, 839069, 1100597, 1359561, 2136453, 2517207, 3301791, 4985057, 7704179, 12106567, 14955171, 23112537, 36319701, 84745969, 254237907]

約数ペア:

[(1, 254237907), (3, 84745969), (7, 36319701), (11, 23112537), (17, 14955171), (21, 12106567), (33, 7704179), (51, 4985057), (77, 3301791), (101, 2517207), (119, 2136453), (187, 1359561), (231, 1100597), (303, 839069), (357, 712151), (561, 453187), (641, 396627), (707, 359601), (1111, 228837), (1309, 194223), (1717, 148071), (1923, 132209), (2121, 119867), (3333, 76279), (3927, 64741), (4487, 56661), (5151, 49357), (7051, 36057), (7777, 32691), (10897, 23331), (12019, 21153), (13461, 18887)]