18215480

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{383}}^1$

素因数の和:464

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 25330120

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 41, 58, 82, 116, 145, 164, 205, 232, 290, 328, 383, 410, 580, 766, 820, 1160, 1189, 1532, 1640, 1915, 2378, 3064, 3830, 4756, 5945, 7660, 9512, 11107, 11890, 15320, 15703, 22214, 23780, 31406, 44428, 47560, 55535, 62812, 78515, 88856, 111070, 125624, 157030, 222140, 314060, 444280, 455387, 628120, 910774, 1821548, 2276935, 3643096, 4553870, 9107740, 18215480]

約数ペア:

[(1, 18215480), (2, 9107740), (4, 4553870), (5, 3643096), (8, 2276935), (10, 1821548), (20, 910774), (29, 628120), (40, 455387), (41, 444280), (58, 314060), (82, 222140), (116, 157030), (145, 125624), (164, 111070), (205, 88856), (232, 78515), (290, 62812), (328, 55535), (383, 47560), (410, 44428), (580, 31406), (766, 23780), (820, 22214), (1160, 15703), (1189, 15320), (1532, 11890), (1640, 11107), (1915, 9512), (2378, 7660), (3064, 5945), (3830, 4756)]